Description
2500 Series® PLC System
The 2531 32-Point Form-A Relay Output Module
provides 16 or 32 Form-A outputs isolated in
groups of eight for the CTI 2500 Series® or
Simatic® 505 I/O base. The module uses relay
output circuits to switch on or off external devices
such as pilot lamps, motor starters, or solenoids.
The 2531 is designed to switch externally
supplied 15 to 240 VAC and 15 to 30 VDC. The
internal logic signals are isolated from the
external outputs to 2100 VDC.

Features
• CTI 2500 Series® or Simatic® 505 base format
• 16 or 32 Form A relay outputs
Product Bulletin
• Replaces Siemens® 505-4932 with no rewiring
• Isolated 3000 VDC group-to-group
• Isolation in groups of 8
• Wide 15-240 VAC and 15-30 VDC output range
• 4.0 Amps per output
• Individually fused outputs
Specifications
Outputs per module: 16 or 32
Isolation: 2100 VDC channel-to-backplane
3000 VDC group-to-group
Output voltage: 15 - 240 VAC
15 - 30 VDC
Indicators: 32 individual LEDs
Maximum output current:
4A per point (resistive)
8A per group (resistive)
Switching rate: 5 ops/sec (no load),
0.5 ops/sec (rated load)
Type of contact: Form A
Type of outputs: Individually fused
Minimum contact load: 10mA @ 5 VDC
Contact life:
@ full rated current, 4A = 400.000 cycles
@ 2A = 1.000.000 cycles
Backplane Power: 1.7 Watts
User Power Supply: 24VDC +10%
600 mA (all outputs ON)
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