32
Rockwell Automation Publication 440R-UM013E-EN-P - March 2017
Chapter 3
Power, Ground, and Wire
The signal can be created with a momentary push button or programmatically
created with logic controller.
shows example wire connections for the
reset. The schematic also shows an example monitoring the mechanically
linked, normally closed contacts of two contactors.
Figure 23 - Monitored Reset Connections
Monitor with Expansion Relays
Monitoring of the expansion relays is recommended. This feature is especially
useful when the expansion relay is turning on loads (for example, solenoid-
operated valves) that do not have monitoring contacts. The auxiliary output of
the expansion relay must be the 24V DC source of the reset and monitoring
shows an example of the connections for a monitored reset
with additional contactor monitoring. This type of connection can also be
used for automatic reset applications.
Figure 24 - Monitor Expansion Relay
TIP
When using a PLC to generate the reset signal, set the duration to
260…2990 ms for a more reliable reset.
+24V DC
24V DC Com
+
1
2
3
Momentary
Normally-Open
Push Button
PLC Output
1756-OB16
1769-OB8
1746-OB4
1734-OB2
1793-OB4
PLC
Processor
CI, DI, DIS, or SI
CI, DI, DIS, or SI
S34
A1
A2
S34
A1
A2
Contactor
Monitoring
+24V DC
24V DC Com
Momentary
Push Button (N.O.)
CI, DI, DIS, or SI
EM or EMD
S34
A1
A2
X32
A1
A2
Contactor
Monitoring
Содержание Guardmaster
Страница 12: ...12 Rockwell Automation Publication440R UM013E EN P March 2017 Chapter 1 Overview Notes...
Страница 16: ...16 Rockwell Automation Publication440R UM013E EN P March 2017 Chapter 2 Installation Notes...
Страница 34: ...34 Rockwell Automation Publication440R UM013E EN P March 2017 Chapter 3 Power Ground and Wire Notes...
Страница 40: ...40 Rockwell Automation Publication440R UM013E EN P March 2017 Chapter 4 Configuration Notes...
Страница 50: ...50 Rockwell Automation Publication440R UM013E EN P March 2017 Chapter 7 EMD Safety Relay Timing Functions Notes...
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