Delta RMC151 User Manual
Page 1167
10 Wiring and Installation
The current rating depends on the size of the backplane:
Backplane
Slots
Maximum
Current
3
375mA
4
500mA
5
625mA
6
750mA
The Case pin is electrically connected to the RMC100 case.
Discrete Outputs
The RMC150E CPU module discrete outputs are solid state relays. When they are ”off”
they have high impedance, and when ”on” they have low impedance (50Ω maximum,
25Ω typical). The user must power the outputs externally. The maximum current and
voltage for the outputs is 75 mA (50 mA for Class I, Div 2) and 30 V.
Each output has a ”+” and ”-” connection. Outputs can be wired in either a high-side or
low-side configuration.
When switching inductive loads, place a diode or tranzorb across the load to protect the
switch when transitioning from an ”on” to an ”off” state. Otherwise, the collapsing
magnetic field can cause a reverse voltage spike in excess of the 30 V rating of the Solid
State Relay.
See the RMC150 DI/O Module Wiring topic for a complete discussion of input wiring.
Discrete Inputs
The RMC150E module inputs are compatible with signal levels ranging from 12 to 24VDC.
The discrete inputs draw 3mA maximum.
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