DI/O Module (RMC150)

The Discrete I/O module for the RMC150 contains eight discrete outputs and eighteen discrete inputs. The discrete I/O are compatible with signals ranging from 5 to 24 VDC.

Discrete I/O can be used for the following purposes:

Turn outputs on and off with commands
Use discrete I/O in User Programs
Use discrete inputs to start User Programs
Physical Limit Inputs

Part Number

The DI/O Module can be placed in slot 0, 3, 4, or 5 of the RMC150 backplane. However, because the backplane connector of slot 0 (the leftmost slot) is different from that of slots 3-5, the part number of a DI/O module for slot 0 differs from a DI/O module for slots 3-5.

If placed in slot 0, the part number is DI/O. If placed in slots 3, 4, or 5, the part number is Dn, where n is the number of D modules. Multiple Discrete I/O modules can be placed in the same rack.

Slot

Part Number

DI/O

This must be added to the end of the part number, for example RMC150E-M1-H2-DI/O.

3-5

Dn
where x is the number of DI/O modules, for example RMC150E-M1-D2.

Setting Up the DI/O Module

To set up the DI/O module, read the following topics:

Discrete I/O Configuration

DI/O Wiring

Specifications

For general specifications on the RMC150, see the RMC150 Overview topic.

Note:
The characteristics of the I/O on the DI/O module differ from the I/O on the RMC150E CPU module.

General
Weight	116 g + 28 g (stock connectors)
Inputs
Inputs	18, compatible with signal levels ranging from 5 V to 24 V.
Input Characteristics	5-24 VDC, Sinking (sourcing driver)
Logic Polarity	True High
Isolation	500 VAC
Input "High" Range	3 to 26.4 VDC 3.2 mA minumum, 10 mA maximum
Input "Low" Range	0 to 2 VDC <1 mA
Filtering	Inputs 0-15: 500 µsec Inputs 16-17: 250 µsec
Maximum Propagation Delay	100 µsec + filtering
Outputs
Outputs	8, Solid State Relay
Logic polarity	True On
Isolation	500 VAC RMS optically isolated
Maximum voltage	± 30 V (DC or peak AC voltage rating of SSR)
Maximum current	±75 mA (±50 mA for Class I, Div 2)
Maximum propagation delay	1.5 ms
Logic 1 (True, On)	Low impedance (50 Ω maximum)
Logic 0 (False, Off)	High impedance (<1 µA leakage current at 250 V)