Rockwell Automation 1771-PM , D17716.5.18 U MNL 1771-PM CLUTCH/BRAKE MOD - Manual (Page 12)

Clutch/Brake Controller Hardware
Chapter 3
3Ć3
Table 3.A
Required and Optional Hardware
Quantity Item Cat. No. Function
Important: (You must use 8Ćpoint modules with 2Ćslot addressing)
Required Hardware
2 Clutch/Brake Module 1771ĆPM Monitors and controls the press
2 Wiring Arm 1771ĆWB Connections to 1771ĆPM
2 I/O Chassis 1771ĆA2B Contains the modules
10 120V AC Input Modules 1771ĆIA Monitors press inputs
2 120V AC Isolated Output Modules
(Series C) 1771ĆOD Controls press outputs
Optional Hardware
2 120V AC Output Modules 1771ĆOA Display of diagnostic messages
1 120AC Output Module 1771ĆOA Controls optional indicators
2 120V AC Input Modules 1771ĆIA Dump valve circuit
2 120V AC Isolated Output Modules
(Series C) 1771ĆOD Dump valve and/or microĆinch circuit
2 I/O chassis 1771ĆA4B Substitute chassis when using the
optional dump valve circuit.
1 120V AC Output Module 1771ĆOA MicroĆinch indicator
2 120V AC Input Modules 1771ĆIA MicroĆinch circuit
2 120V AC Input Modules 1771ĆIA Additional operator stations
Clutch/brake modules operate in parallel to monitor and control your
press. Clutch/brake modules are also called “voting processors” because
they must always have a consensus. Unless both voting processors
constantly agree that they sense identical conditions in your clutch/brake
press system, either or both voting processors stop press motion or
prevent it from starting.
Your clutch/brake controller monitors and controls your press. Although
your PLC does not control your press, it does configure and enable the
clutch/brake controller. Your PLC ladder program can monitor inputs to,
and the status of, your clutch/brake controller. This allows your PLC to
control other indicators, machines, or processes related to your press
system.