The RD233 is an expandable combination relay output and digital input card for use with PR10, PR20, or PR30 paperless chart recorders. Each card provides 3 digital inputs and 3 relay outputs, supporting a mix of monitoring and control functions in industrial applications.
Expansion Slots
The PR10 and PR20 recorders support up to 4 rear expansion slots, while the PR30 provides up to 16 rear expansion slots for scalable system design.
SPECIFICATIONS
Channels
3 digital inputs, 3 relay outputs
Logic Low
-5V minimum, 0.8V maximum
Logic High
3.5V minimum, 24V maximum
External Pull-down Resistance
1K maximum
External Pull-up Resistance
1.5M minimum
Relay Contact Form
N.O. & N.C. (Form C)
Relay Rating
5A/240 VAC, 200,000 life cycles (resistive load)
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