Alternating Relays - Klockner Moeller
Tab40.book Page 187 Thursday, April 7, 2011 10:00 AM
Control Relays and Timers Alternating Relays
40.9
Contents
D85 Series—Alternating Relays
Description
Page
D85 Series—Alternating Relays Product Selection . . . . . . . . . . . . . . . . . . . . . . . Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . Technical Data and Specifications . . . . . . . . . . Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . .
40 40
V7-T40-188 V7-T40-188 V7-T40-189 V7-T40-189 V7-T40-191
40 40 40 40 40 40 40 40
Product Description Alternating relays are used in applications where the optimization of load usage is required by equalizing the run time of two loads. They are also used where additional capacity is required in case of excess load requirements. This alternating action is initiated by a control switch— such as a float switch, manual switch, timing relay, pressure switch or other isolated contact. Each time the initiating switch is opened, the output relay contacts will change state, thus alternating the two loads. Two LED indicators show the status of the output relay. The D851 and D852 Series Relays are used with one control switch and are available in either SPDT or DPDT output configurations with or without a selector switch to lock in one sequence. The D852X Series Relays are available in DPDT cross-wired output configurations for use with one or two control switches (LEAD and LAG).
40
Features The D853 Series is designed for use with three-switch applications (LEAD, LAG and STOP). The D853 Series combines a standard DPDT Cross-Wired alternating relay, contactor auxiliary contacts, and a control relay into one compact and economical product. This saves space and labor, while reducing the number of components needed. The D853 Series uses Sequence On– Simultaneous Off (S.O.S.O.) operation, where the two loads are energized sequentially, but remain on together until the STOP switch is opened. This device also protects against failure of the STOP and LEAD switches. If both switches fail, the two pump motors will be energized simultaneously when the LAG switch is closed.
Each of the D85 Series alternating relays is available with an optional threeposition selector switch, which allows the unit to alternate the two loads as normal, or lock the relay to one load or the other. By locking the alternating relay to one load, the other load can be removed for service without rewiring the first load for continuous operation. The selector switch has a low profile to prevent any accidental actuation.
● ●
●
●
●
●
●
For duplex loads Works with one-, two-, or three-switch applications Compact plug-in design using industry standard sockets 10A SPDT or DPDT output configurations Optional low profile selector switch to lock in one sequence Two LEDs indicate relay status D853 Series replaces separate components in duplex panel—saving space and reducing labor
● ● ●
40 40 40 40 40 40 40 40
Standards and Certifications ●
40
40
CE cRUus UL listed RoHS compliant
40 40 40 40
Note When used with appropriate Eaton socket.
40 40 40 40 40
Volume 7—Motor Controls, Logic and Connectivity CA08100008E—April 2011 www.eaton.com
V7-T40-187
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40.9 40
Control Relays and Timers Alternating Relays
Product Selection D85 Series—Alternating Relays
40
Output Contacts
Control Voltage
Socket
Catalog Number
SPDT
12 Vac
8-pin
D851NR
40
SPDT
24 Vac
8-pin
D851NT
SPDT
120 Vac
8-pin
D851NA
40
SPDT
240 Vac
8-pin
D851NB
SPDT w/selector switch
12 Vac
8-pin
D851LR
SPDT w/selector switch
24 Vac
8-pin
D851LT
SPDT w/selector switch
120 Vac
8-pin
D851LA
SPDT w/selector switch
240 Vac
8-pin
D851LB
40
DPDT
12 Vac
11-pin
D852NR
DPDT
24 Vac
11-pin
D852NT
40
DPDT
120 Vac
11-pin
D852NA
DPDT
240 Vac
11-pin
D852NB
DPDT w/selector switch
12 Vac
11-pin
D852LR
40
DPDT w/selector switch
24 Vac
11-pin
D852LT
DPDT w/selector switch
120 Vac
11-pin
D852LA
40
DPDT w/selector switch
240 Vac
11-pin
D852LB
DPDT cross-wired
12 Vac
8-pin
D852XNR
DPDT cross-wired
24 Vac
8-pin
D852XNT
DPDT cross-wired
120 Vac
8-pin
D852XNA
DPDT cross-wired
240 Vac
8-pin
D852XNB
40
DPDT cross-wired w/selector switch
12 Vac
8-pin
D852XLR
DPDT cross-wired w/selector switch
24 Vac
8-pin
D852XLT
40
DPDT cross-wired w/selector switch
120 Vac
8-pin
D852XLA
DPDT cross-wired w/selector switch
240 Vac
8-pin
D852XLB
40
40 40
40
40 40
40 40
Accessories D85 Series—Alternating Relays
40 40 40 40
Description
Standard Pack
Catalog Number
8-pin socket
10
D3PA2
11-pin socket
10
D3PA3-A2
Hold-down spring
10
D65CHDS
Note Contact Eaton for relays for 3-switch applications (Lead-Lag-Stop).
40 40 40 40 40 40 40 40 V7-T40-188
Volume 7—Motor Controls, Logic and Connectivity CA08100008E—April 2011 www.eaton.com
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40.9
Control Relays and Timers Alternating Relays
Technical Data and Specifications
40
D85 Series—Alternating Relays
40
Description
Specification
Voltage tolerance
+10%/-15% of control voltage at 50/60 Hz
Load (burden)
Less than 3 VA
Output contacts
10A resistive at 240 Vac / 30 Vdc, 1/2 hp at 120/240 Vac (NO), 1/3 hp at 120/240 Vac (NC)
Mechanical life
10,000,000 operations
Electrical life
100,000 operations
Temperature
–20˚ to 150˚F (–28˚ to 65˚C)
40 40 40
Transient protection
10,000 volts for 20 microseconds
Indicator LEDs
2 LEDs marked LOAD A and LOAD B
Optional selector switch settings
ALTERNATE, LOCK LOAD A, LOCK LOAD B
40 40 40
Wiring Diagrams D851 Series Relays, SPDT
D852 Series Relays, DPDT
Input Voltage L2
Input Voltage
L1
L1
Control Switch
D852X Series Relays, DPDT Cross-Wired
L2
Input Voltage
L1
D853 Series Relays, Three-Switch Applications L2 Stop
Control Switch
5
3
6
4
2
7
3 2
1
8
5
6 7
Lag
8
Lag
6
2
9 10
7 1 8
1 11
Load A: Pin 2 Load B: Pin 8
3
40
4 5
4 5 4
40
Input Voltage L1
L2
3
6
2
Load B
Load B
7 1 8
Load A
Load A
Load A: Pins 3 or 11 Load B: Pins 1 or 9
Typical Installations for SPDT and DPDT Alternating Relays, Standard Installation L2
L1
Typical Installations for SPDT and DPDT Alternating Relays, Anti-Bounce Installation L1
L2 M2 M2
SPDT O/L
1 2 Control Switch 5
4
8
M1
M1 SPDT
M2
3
2
Control Switch 5
4
In the OFF state (standard installation), the control switch is open, the alternating relay is in the LOAD A position, and both loads (M1 and M2) are off. When the control switch closes, it energizes the first load (M1). The red LED marked “LOAD A” glows. As long as the control switch remains closed, M1 remains energized.
When the control switch opens, the first load (M1) is turned off and the alternating relay toggles to the LOAD B position. When the control switch closes again, it energizes the second load (M2). The red LED marked “LOAD B” glows.
When the control switch opens, the second load (M2) is turned off, the alternating relay toggles back to the LOAD A position, and the process can be repeated again. On relays with DPDT contacts, two pilot lights can be used for remote indication of LOAD A or LOAD B status.
40 40 40 40 40
1 Off
40
40
M1
O/L
40 40
Lead
Lead
40
40
8
40
3
40
To eliminate any bounce condition of the control switch, the addition of a second switch (OFF) along with two auxiliary contacts is recommended as shown in the Anti-Bounce Installation.
40 40 40 40 40 40 40
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40.9
Control Relays and Timers Alternating Relays
40
Typical Installations for DPDT Cross-Wired Alternating Relays, Standard Installation
Typical Installations for DPDT Cross-Wired Alternating Relays, Anti-Bounce Installation
40
L1
L1
L2
L2 M2 M2
40
Cross-Wired
40
M1
Lag 8
40
Cross-Wired
M1 Lag
Lead
2
O/L
1
40
M1
O/L
2
7
M2
Off
Lead
1
40
7
40
3
6 3
40 40 40 40 40 40
8
6
In the OFF state, both the LEAD control switch and the LAG control switch are open, the alternating relay is in the LOAD A position, and both loads are off. When the LEAD control switch closes, it energizes the first load (M1). The red LED marked “LOAD A” glows. As long as the LEAD control switch remains closed, M1 remains energized. If the LAG control switch closes, it energizes the second load (M2).
When the LEAD control switch closes, it turns on the second load (M2). The red LED marked “LOAD B” glows. If the LAG control switch closes, it will energize the first load (M1). When the LAG control switch opens, the first load (M1) is turned off. When the LEAD control switch opens, the second load (M2) is turned off, the alternating relay toggles back to the LOAD A position, and the process can be repeated again.
When the LAG control switch opens, the second load (M2) is turned off. When the LEAD control switch opens, the first load (M1) is turned off and the alternating relay toggles to the LOAD B position.
To eliminate any bounce condition of the control switch, the addition of a second switch (OFF) along with two auxiliary contacts is recommended as shown in the Anti-Bounce Installation.
40 40
Typical Installations for DPDT Cross-Wired Relays for Three-Switch Applications
40
L1
40
L2
40
L1
40
L2
40
L3
40 40 40 40 40 40
M1
M2
M1
7
M2
O/L
1 Stop Switch
Motor 2
8 Lead Switch
Motor 1
M2 M2
O/L
2
M1
L3
40
Lag Switch
M1
4
L1
3
L2
6
In the OFF state, all three switches are open, the alternating relay is in the LOAD A position, and both loads are off. No action happens with the alternating relay or either load when the STOP switch closes. When the LEAD switch closes, Load #1 (M1) turns on. When the LAG switch closes, Load #2 (M2) turns on. Both loads remain on as long as all three switches are closed.
The alternating relay toggles to the LOAD B position. The entire cycle is then repeated, but with Load #2 (M2) energized first followed by Load #1 (M1). This type of operation is known as “Sequence On–Simultaneously Off (S.O.S.O.)”—the two loads are energized sequentially, but remain on together until the STOP switch is opened.
When the LAG switch opens, Load #2 (M2) remains on because the STOP switch is still closed. When the LEAD switch opens, Load #1 (M1) remains on because the STOP switch is still closed. When the STOP switch opens, both Load #1 (M1) and Load #2 (M2) are turned off simultaneously.
If both the STOP switch and LEAD switch fail to close and turn on the first load, both loads will be turned on simultaneously when the LAG switch is closed.
40 40 V7-T40-190
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Control Relays and Timers Alternating Relays
40.9
Dimensions
40
Approximate Dimensions in Inches (mm)
40
D85 Series—Alternating Relays
40 40 2.4 (60)
40 40 1.7 (43)
2.9 (74)
40
3.1 (79)
40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40
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For Immediate Delivery or Tech Support call KMParts.com at (866) 595-9616
Index
A
B
Accessories, 1-2 accidental, 1 action, 1, 4 actuation, 1 addition, 3-4 additional, 1 again, 3-4 against, 1 all, 4 allows, 1 along, 3-4 also, 1 ALTERNATE, 3 alternate, 1 Alternating, 1-5 alternating, 1, 3-4 AM, 1-5 an, 1 and, 1-5 Anti, 3-4 any, 1, 3-4 Applications, 3-4 applications, 1-2 appropriate, 1 Approximate, 5 April, 1-5 are, 1, 3-4 As, 3-4 as, 1, 3-4 at, 1-5 auxiliary, 1, 3-4 available, 1
back, 3-4 be, 1, 3-4 because, 4 book, 1-5 Both, 4 both, 1, 3-4 Bounce, 3-4 bounce, 3-4 burden, 3 but, 1, 4 By, 1 by, 1, 4
C CA, 1-5 call, 1-5 can, 1, 3-4 capacity, 1 case, 1 Catalog, 2 CEfail, 1 Certifications, 1 change, 1 CHDS, 2 close, 4 closed, 1, 3-4 closes, 3-4 com, 1-5
Index
combines, 1 Compact, 1 compact, 1 compliant, 1 components, 1 condition, 3-4 configurations, 1 Connectivity, 1-5 Contact, 2 contact, 1 contactor, 1 Contacts, 2 contacts, 1, 3-4 Contents, 1 continuous, 1 Control, 1-5 control, 1, 3-4 Controls, 1-5 Cross, 1, 3-4 cross, 1-2 cRUus, 1 cycle, 4
entire, 4 equalizing, 1 excess, 1
F fail, 4 failure, 1 Features, 1 first, 1, 3-4 float, 1 followed, 4 For, 1-5 for, 1-4
G D Data, 1, 3 Delivery, 1-5 Description, 1-3 design, 1 designed, 1 device, 1 Diagrams, 1, 3 Dimensions, 1, 5 down, 2 DPDT, 1-4 duplex, 1
E Each, 1 Eaton, 1-2 eaton, 1-5 economical, 1 either, 1, 4 Electrical, 3 eliminate, 3-4 empera, 3 energize, 4 energized, 1, 3-4 energizes, 3-4
glows, 3-4
H happens, 4 has, 1 Hold, 2 hp, 3 Hz, 3
I If, 1, 4 Immediate, 1-5 In, 3-4 in, 1, 3-5 Inches, 5 indicate, 1 indication, 3 Indicator, 3 indicators, 1 industry, 1 initiated, 1
Index
initiating, 1 Input, 3 Installation, 3-4 installation, 3 Installations, 3-4 into, 1 is, 1, 3-4 isolated, 1 it, 3-4
M manual, 1 marked, 3-4 Mechanical, 3 microseconds, 3 mm, 5 Motor, 1-5 motors, 1
K KMParts, 1-5 known, 4
L LA, 2 labor, 1 LAG, 1, 4 Lag, 2-4 LASPDT, 2 LB, 2 LEAD, 1, 4 Lead, 2-4 LeadL, 4 LED, 1, 3-4 LEDs, 1, 3 Less, 3 life, 3 lights, 3 listed, 1 LOAD, 3-4 Load, 3-4 load, 1, 3-4 loads, 1, 3-4 LOCK, 3 lock, 1 locking, 1 Logic, 1-5 long, 3-4 low, 1 LR, 2 LT, 2 LTDPDT, 2
N NA, 2 NB, 2 NC, 3 needed, 1 NO, 3 No, 4 normal, 1 Note, 1-2 NR, 2 NT, 2 Number, 2 number, 1
O of, 1, 3-4 OFF, 3-4 Off, 1, 3-4 off, 3-4 On, 1, 3-4 on, 1, 4 one, 1 open, 3-4 opened, 1, 4 opens, 3-4 operation, 1, 4 operations, 3 optimization, 1 Optional, 1, 3 optional, 1 or, 1-5 other, 1 Output, 2-3 output, 1
Index
P PA, 2 Pack, 2 Page, 1-5 panel, 1 pilot, 3 Pin, 3 pin, 2 Pins, 3 plug, 1 position, 1, 3-4 pressure, 1 prevent, 1 process, 3-4 Product, 1-2 product, 1 profile, 1 protection, 3 protects, 1 pump, 1
R recommended, 3-4 red, 3-4 reducing, 1 relay, 1, 3-4 Relays, 1-5 relays, 1-3 remain, 1, 4 remains, 3-4 remote, 3 removed, 1 repeated, 3-4 replaces, 1 required, 1 requirements, 1 resistive, 3 rewiring, 1 RoHS, 1 run, 1
S saves, 1 saving, 1
second, 3-4 Selection, 1-2 selector, 1-3 separate, 1 Sequence, 1, 4 sequence, 1 sequentially, 1, 4 Series, 1-3, 5 service, 1 settings, 3 show, 1 shown, 3-4 Simultaneous, 1 Simultaneously, 4 simultaneously, 1, 4 Socket, 2 socket, 1-2 sockets, 1 space, 1 SPDT, 1-3 Specification, 3 Specifications, 1, 3 spring, 2 Standard, 2-4 standard, 1, 3 Standards, 1 state, 1, 3-4 status, 1, 3 still, 4 STOP, 1, 4 Stop, 2-4 such, 1 Support, 1-5 Switch, 3-4 switch, 1-4 switches, 1, 4 SwitchL, 4
T Tab, 1-5 Tech, 1-5 Technical, 1, 3 than, 3 The, 1, 3-4 the, 1, 3-4 then, 4 They, 1 This, 1, 4 Three, 3-4 three, 1, 4 Thursday, 1-5 thus, 1 time, 1
Index
Timers, 1-5 timing, 1 To, 3-4 to, 1, 3-4 together, 1, 4 toggles, 3-4 tolerance, 3 Transient, 3 ture, 3 turn, 4 turned, 3-4 turns, 4 Two, 1 two, 1, 3-4 type, 4 Typical, 3-4
U UL, 1 unit, 1 until, 1, 4 usage, 1 use, 1 used, 1, 3 uses, 1 using, 1
V VA, 3 Vac, 2-3 Vdc, 3 Voltage, 2-3 voltage, 3 volts, 3 Volume, 1-5
W When, 1, 3-4 when, 1, 4 where, 1 which, 1 while, 1
will, 1, 4 Wired, 1, 3-4 wired, 1-2 Wiring, 1, 3 with, 1, 3-4 without, 1 Works, 1 www, 1-5
X XLA, 2 XLB, 2 XLR, 2 XLT, 2 XNA, 2 XNB, 2 XNR, 2 XNT, 2
Control Relays and Timers Alternating Relays
40.9
Contents
D85 Series—Alternating Relays
Description
Page
D85 Series—Alternating Relays Product Selection . . . . . . . . . . . . . . . . . . . . . . . Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . Technical Data and Specifications . . . . . . . . . . Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . .
40 40
V7-T40-188 V7-T40-188 V7-T40-189 V7-T40-189 V7-T40-191
40 40 40 40 40 40 40 40
Product Description Alternating relays are used in applications where the optimization of load usage is required by equalizing the run time of two loads. They are also used where additional capacity is required in case of excess load requirements. This alternating action is initiated by a control switch— such as a float switch, manual switch, timing relay, pressure switch or other isolated contact. Each time the initiating switch is opened, the output relay contacts will change state, thus alternating the two loads. Two LED indicators show the status of the output relay. The D851 and D852 Series Relays are used with one control switch and are available in either SPDT or DPDT output configurations with or without a selector switch to lock in one sequence. The D852X Series Relays are available in DPDT cross-wired output configurations for use with one or two control switches (LEAD and LAG).
40
Features The D853 Series is designed for use with three-switch applications (LEAD, LAG and STOP). The D853 Series combines a standard DPDT Cross-Wired alternating relay, contactor auxiliary contacts, and a control relay into one compact and economical product. This saves space and labor, while reducing the number of components needed. The D853 Series uses Sequence On– Simultaneous Off (S.O.S.O.) operation, where the two loads are energized sequentially, but remain on together until the STOP switch is opened. This device also protects against failure of the STOP and LEAD switches. If both switches fail, the two pump motors will be energized simultaneously when the LAG switch is closed.
Each of the D85 Series alternating relays is available with an optional threeposition selector switch, which allows the unit to alternate the two loads as normal, or lock the relay to one load or the other. By locking the alternating relay to one load, the other load can be removed for service without rewiring the first load for continuous operation. The selector switch has a low profile to prevent any accidental actuation.
● ●
●
●
●
●
●
For duplex loads Works with one-, two-, or three-switch applications Compact plug-in design using industry standard sockets 10A SPDT or DPDT output configurations Optional low profile selector switch to lock in one sequence Two LEDs indicate relay status D853 Series replaces separate components in duplex panel—saving space and reducing labor
● ● ●
40 40 40 40 40 40 40 40
Standards and Certifications ●
40
40
CE cRUus UL listed RoHS compliant
40 40 40 40
Note When used with appropriate Eaton socket.
40 40 40 40 40
Volume 7—Motor Controls, Logic and Connectivity CA08100008E—April 2011 www.eaton.com
V7-T40-187
For Immediate Delivery or Tech Support call KMParts.com at (866) 595-9616
Tab40.book Page 188 Thursday, April 7, 2011 10:00 AM
40.9 40
Control Relays and Timers Alternating Relays
Product Selection D85 Series—Alternating Relays
40
Output Contacts
Control Voltage
Socket
Catalog Number
SPDT
12 Vac
8-pin
D851NR
40
SPDT
24 Vac
8-pin
D851NT
SPDT
120 Vac
8-pin
D851NA
40
SPDT
240 Vac
8-pin
D851NB
SPDT w/selector switch
12 Vac
8-pin
D851LR
SPDT w/selector switch
24 Vac
8-pin
D851LT
SPDT w/selector switch
120 Vac
8-pin
D851LA
SPDT w/selector switch
240 Vac
8-pin
D851LB
40
DPDT
12 Vac
11-pin
D852NR
DPDT
24 Vac
11-pin
D852NT
40
DPDT
120 Vac
11-pin
D852NA
DPDT
240 Vac
11-pin
D852NB
DPDT w/selector switch
12 Vac
11-pin
D852LR
40
DPDT w/selector switch
24 Vac
11-pin
D852LT
DPDT w/selector switch
120 Vac
11-pin
D852LA
40
DPDT w/selector switch
240 Vac
11-pin
D852LB
DPDT cross-wired
12 Vac
8-pin
D852XNR
DPDT cross-wired
24 Vac
8-pin
D852XNT
DPDT cross-wired
120 Vac
8-pin
D852XNA
DPDT cross-wired
240 Vac
8-pin
D852XNB
40
DPDT cross-wired w/selector switch
12 Vac
8-pin
D852XLR
DPDT cross-wired w/selector switch
24 Vac
8-pin
D852XLT
40
DPDT cross-wired w/selector switch
120 Vac
8-pin
D852XLA
DPDT cross-wired w/selector switch
240 Vac
8-pin
D852XLB
40
40 40
40
40 40
40 40
Accessories D85 Series—Alternating Relays
40 40 40 40
Description
Standard Pack
Catalog Number
8-pin socket
10
D3PA2
11-pin socket
10
D3PA3-A2
Hold-down spring
10
D65CHDS
Note Contact Eaton for relays for 3-switch applications (Lead-Lag-Stop).
40 40 40 40 40 40 40 40 V7-T40-188
Volume 7—Motor Controls, Logic and Connectivity CA08100008E—April 2011 www.eaton.com
For Immediate Delivery or Tech Support call KMParts.com at (866) 595-9616
Tab40.book Page 189 Thursday, April 7, 2011 10:00 AM
40.9
Control Relays and Timers Alternating Relays
Technical Data and Specifications
40
D85 Series—Alternating Relays
40
Description
Specification
Voltage tolerance
+10%/-15% of control voltage at 50/60 Hz
Load (burden)
Less than 3 VA
Output contacts
10A resistive at 240 Vac / 30 Vdc, 1/2 hp at 120/240 Vac (NO), 1/3 hp at 120/240 Vac (NC)
Mechanical life
10,000,000 operations
Electrical life
100,000 operations
Temperature
–20˚ to 150˚F (–28˚ to 65˚C)
40 40 40
Transient protection
10,000 volts for 20 microseconds
Indicator LEDs
2 LEDs marked LOAD A and LOAD B
Optional selector switch settings
ALTERNATE, LOCK LOAD A, LOCK LOAD B
40 40 40
Wiring Diagrams D851 Series Relays, SPDT
D852 Series Relays, DPDT
Input Voltage L2
Input Voltage
L1
L1
Control Switch
D852X Series Relays, DPDT Cross-Wired
L2
Input Voltage
L1
D853 Series Relays, Three-Switch Applications L2 Stop
Control Switch
5
3
6
4
2
7
3 2
1
8
5
6 7
Lag
8
Lag
6
2
9 10
7 1 8
1 11
Load A: Pin 2 Load B: Pin 8
3
40
4 5
4 5 4
40
Input Voltage L1
L2
3
6
2
Load B
Load B
7 1 8
Load A
Load A
Load A: Pins 3 or 11 Load B: Pins 1 or 9
Typical Installations for SPDT and DPDT Alternating Relays, Standard Installation L2
L1
Typical Installations for SPDT and DPDT Alternating Relays, Anti-Bounce Installation L1
L2 M2 M2
SPDT O/L
1 2 Control Switch 5
4
8
M1
M1 SPDT
M2
3
2
Control Switch 5
4
In the OFF state (standard installation), the control switch is open, the alternating relay is in the LOAD A position, and both loads (M1 and M2) are off. When the control switch closes, it energizes the first load (M1). The red LED marked “LOAD A” glows. As long as the control switch remains closed, M1 remains energized.
When the control switch opens, the first load (M1) is turned off and the alternating relay toggles to the LOAD B position. When the control switch closes again, it energizes the second load (M2). The red LED marked “LOAD B” glows.
When the control switch opens, the second load (M2) is turned off, the alternating relay toggles back to the LOAD A position, and the process can be repeated again. On relays with DPDT contacts, two pilot lights can be used for remote indication of LOAD A or LOAD B status.
40 40 40 40 40
1 Off
40
40
M1
O/L
40 40
Lead
Lead
40
40
8
40
3
40
To eliminate any bounce condition of the control switch, the addition of a second switch (OFF) along with two auxiliary contacts is recommended as shown in the Anti-Bounce Installation.
40 40 40 40 40 40 40
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40.9
Control Relays and Timers Alternating Relays
40
Typical Installations for DPDT Cross-Wired Alternating Relays, Standard Installation
Typical Installations for DPDT Cross-Wired Alternating Relays, Anti-Bounce Installation
40
L1
L1
L2
L2 M2 M2
40
Cross-Wired
40
M1
Lag 8
40
Cross-Wired
M1 Lag
Lead
2
O/L
1
40
M1
O/L
2
7
M2
Off
Lead
1
40
7
40
3
6 3
40 40 40 40 40 40
8
6
In the OFF state, both the LEAD control switch and the LAG control switch are open, the alternating relay is in the LOAD A position, and both loads are off. When the LEAD control switch closes, it energizes the first load (M1). The red LED marked “LOAD A” glows. As long as the LEAD control switch remains closed, M1 remains energized. If the LAG control switch closes, it energizes the second load (M2).
When the LEAD control switch closes, it turns on the second load (M2). The red LED marked “LOAD B” glows. If the LAG control switch closes, it will energize the first load (M1). When the LAG control switch opens, the first load (M1) is turned off. When the LEAD control switch opens, the second load (M2) is turned off, the alternating relay toggles back to the LOAD A position, and the process can be repeated again.
When the LAG control switch opens, the second load (M2) is turned off. When the LEAD control switch opens, the first load (M1) is turned off and the alternating relay toggles to the LOAD B position.
To eliminate any bounce condition of the control switch, the addition of a second switch (OFF) along with two auxiliary contacts is recommended as shown in the Anti-Bounce Installation.
40 40
Typical Installations for DPDT Cross-Wired Relays for Three-Switch Applications
40
L1
40
L2
40
L1
40
L2
40
L3
40 40 40 40 40 40
M1
M2
M1
7
M2
O/L
1 Stop Switch
Motor 2
8 Lead Switch
Motor 1
M2 M2
O/L
2
M1
L3
40
Lag Switch
M1
4
L1
3
L2
6
In the OFF state, all three switches are open, the alternating relay is in the LOAD A position, and both loads are off. No action happens with the alternating relay or either load when the STOP switch closes. When the LEAD switch closes, Load #1 (M1) turns on. When the LAG switch closes, Load #2 (M2) turns on. Both loads remain on as long as all three switches are closed.
The alternating relay toggles to the LOAD B position. The entire cycle is then repeated, but with Load #2 (M2) energized first followed by Load #1 (M1). This type of operation is known as “Sequence On–Simultaneously Off (S.O.S.O.)”—the two loads are energized sequentially, but remain on together until the STOP switch is opened.
When the LAG switch opens, Load #2 (M2) remains on because the STOP switch is still closed. When the LEAD switch opens, Load #1 (M1) remains on because the STOP switch is still closed. When the STOP switch opens, both Load #1 (M1) and Load #2 (M2) are turned off simultaneously.
If both the STOP switch and LEAD switch fail to close and turn on the first load, both loads will be turned on simultaneously when the LAG switch is closed.
40 40 V7-T40-190
Volume 7—Motor Controls, Logic and Connectivity CA08100008E—April 2011 www.eaton.com
For Immediate Delivery or Tech Support call KMParts.com at (866) 595-9616
Tab40.book Page 191 Thursday, April 7, 2011 10:00 AM
Control Relays and Timers Alternating Relays
40.9
Dimensions
40
Approximate Dimensions in Inches (mm)
40
D85 Series—Alternating Relays
40 40 2.4 (60)
40 40 1.7 (43)
2.9 (74)
40
3.1 (79)
40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40
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V7-T40-191
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Index
A
B
Accessories, 1-2 accidental, 1 action, 1, 4 actuation, 1 addition, 3-4 additional, 1 again, 3-4 against, 1 all, 4 allows, 1 along, 3-4 also, 1 ALTERNATE, 3 alternate, 1 Alternating, 1-5 alternating, 1, 3-4 AM, 1-5 an, 1 and, 1-5 Anti, 3-4 any, 1, 3-4 Applications, 3-4 applications, 1-2 appropriate, 1 Approximate, 5 April, 1-5 are, 1, 3-4 As, 3-4 as, 1, 3-4 at, 1-5 auxiliary, 1, 3-4 available, 1
back, 3-4 be, 1, 3-4 because, 4 book, 1-5 Both, 4 both, 1, 3-4 Bounce, 3-4 bounce, 3-4 burden, 3 but, 1, 4 By, 1 by, 1, 4
C CA, 1-5 call, 1-5 can, 1, 3-4 capacity, 1 case, 1 Catalog, 2 CEfail, 1 Certifications, 1 change, 1 CHDS, 2 close, 4 closed, 1, 3-4 closes, 3-4 com, 1-5
Index
combines, 1 Compact, 1 compact, 1 compliant, 1 components, 1 condition, 3-4 configurations, 1 Connectivity, 1-5 Contact, 2 contact, 1 contactor, 1 Contacts, 2 contacts, 1, 3-4 Contents, 1 continuous, 1 Control, 1-5 control, 1, 3-4 Controls, 1-5 Cross, 1, 3-4 cross, 1-2 cRUus, 1 cycle, 4
entire, 4 equalizing, 1 excess, 1
F fail, 4 failure, 1 Features, 1 first, 1, 3-4 float, 1 followed, 4 For, 1-5 for, 1-4
G D Data, 1, 3 Delivery, 1-5 Description, 1-3 design, 1 designed, 1 device, 1 Diagrams, 1, 3 Dimensions, 1, 5 down, 2 DPDT, 1-4 duplex, 1
E Each, 1 Eaton, 1-2 eaton, 1-5 economical, 1 either, 1, 4 Electrical, 3 eliminate, 3-4 empera, 3 energize, 4 energized, 1, 3-4 energizes, 3-4
glows, 3-4
H happens, 4 has, 1 Hold, 2 hp, 3 Hz, 3
I If, 1, 4 Immediate, 1-5 In, 3-4 in, 1, 3-5 Inches, 5 indicate, 1 indication, 3 Indicator, 3 indicators, 1 industry, 1 initiated, 1
Index
initiating, 1 Input, 3 Installation, 3-4 installation, 3 Installations, 3-4 into, 1 is, 1, 3-4 isolated, 1 it, 3-4
M manual, 1 marked, 3-4 Mechanical, 3 microseconds, 3 mm, 5 Motor, 1-5 motors, 1
K KMParts, 1-5 known, 4
L LA, 2 labor, 1 LAG, 1, 4 Lag, 2-4 LASPDT, 2 LB, 2 LEAD, 1, 4 Lead, 2-4 LeadL, 4 LED, 1, 3-4 LEDs, 1, 3 Less, 3 life, 3 lights, 3 listed, 1 LOAD, 3-4 Load, 3-4 load, 1, 3-4 loads, 1, 3-4 LOCK, 3 lock, 1 locking, 1 Logic, 1-5 long, 3-4 low, 1 LR, 2 LT, 2 LTDPDT, 2
N NA, 2 NB, 2 NC, 3 needed, 1 NO, 3 No, 4 normal, 1 Note, 1-2 NR, 2 NT, 2 Number, 2 number, 1
O of, 1, 3-4 OFF, 3-4 Off, 1, 3-4 off, 3-4 On, 1, 3-4 on, 1, 4 one, 1 open, 3-4 opened, 1, 4 opens, 3-4 operation, 1, 4 operations, 3 optimization, 1 Optional, 1, 3 optional, 1 or, 1-5 other, 1 Output, 2-3 output, 1
Index
P PA, 2 Pack, 2 Page, 1-5 panel, 1 pilot, 3 Pin, 3 pin, 2 Pins, 3 plug, 1 position, 1, 3-4 pressure, 1 prevent, 1 process, 3-4 Product, 1-2 product, 1 profile, 1 protection, 3 protects, 1 pump, 1
R recommended, 3-4 red, 3-4 reducing, 1 relay, 1, 3-4 Relays, 1-5 relays, 1-3 remain, 1, 4 remains, 3-4 remote, 3 removed, 1 repeated, 3-4 replaces, 1 required, 1 requirements, 1 resistive, 3 rewiring, 1 RoHS, 1 run, 1
S saves, 1 saving, 1
second, 3-4 Selection, 1-2 selector, 1-3 separate, 1 Sequence, 1, 4 sequence, 1 sequentially, 1, 4 Series, 1-3, 5 service, 1 settings, 3 show, 1 shown, 3-4 Simultaneous, 1 Simultaneously, 4 simultaneously, 1, 4 Socket, 2 socket, 1-2 sockets, 1 space, 1 SPDT, 1-3 Specification, 3 Specifications, 1, 3 spring, 2 Standard, 2-4 standard, 1, 3 Standards, 1 state, 1, 3-4 status, 1, 3 still, 4 STOP, 1, 4 Stop, 2-4 such, 1 Support, 1-5 Switch, 3-4 switch, 1-4 switches, 1, 4 SwitchL, 4
T Tab, 1-5 Tech, 1-5 Technical, 1, 3 than, 3 The, 1, 3-4 the, 1, 3-4 then, 4 They, 1 This, 1, 4 Three, 3-4 three, 1, 4 Thursday, 1-5 thus, 1 time, 1
Index
Timers, 1-5 timing, 1 To, 3-4 to, 1, 3-4 together, 1, 4 toggles, 3-4 tolerance, 3 Transient, 3 ture, 3 turn, 4 turned, 3-4 turns, 4 Two, 1 two, 1, 3-4 type, 4 Typical, 3-4
U UL, 1 unit, 1 until, 1, 4 usage, 1 use, 1 used, 1, 3 uses, 1 using, 1
V VA, 3 Vac, 2-3 Vdc, 3 Voltage, 2-3 voltage, 3 volts, 3 Volume, 1-5
W When, 1, 3-4 when, 1, 4 where, 1 which, 1 while, 1
will, 1, 4 Wired, 1, 3-4 wired, 1-2 Wiring, 1, 3 with, 1, 3-4 without, 1 Works, 1 www, 1-5
X XLA, 2 XLB, 2 XLR, 2 XLT, 2 XNA, 2 XNB, 2 XNR, 2 XNT, 2
