Wiring Digital Inputs To Indicate Power Supply Failure - Emerson ControlWave Instruction Manual

Figure 2-16. Location of TB2 on ControlWave I/O Switcher

2.3.8 Wiring Digital Inputs to indicate Power Supply Failure

Table 2-3. Wiring a Digital Input to Indicate Power Supply Failure
Power
Supply
1
2
Revised Aug-2015
Each power supply on the PSSM drives a solid state relay contact closed
during normal operation. In a failure, this contact opens. You can
optionally wire the contact to a digital input (either externally or
internally sourced) to provide indication of a power supply failure. You
must wire the contact differently depending upon whether the digital
input supports internally sourced or externally sourced power. See Table
2-3 for details.
Digital Input (Internally
Sourced)
TB3-3 SYSTEM GND
TB3-4 DIGITAL INPUT
TB3-1 SYSTEM GND
TB3-2 DIGITAL INPUT
ControlWave I/O Expansion Rack Instruction Manual
Digital Input (Externally
Sourced)
TB3-3 SYSTEM PWR
TB3-4 DIGITAL INPUT
TB3-1 SYSTEM PWR
TB3-2 DIGITAL INPUT
Installation 2-23