CTI 2581 16-Point Isolated 12-56 VDC Input Module



2581 16-Point Isolated 12-56 VDC Input Module

The 2581 16-point discrete input module accepts sixteen discrete isolated inputs to the CTI 2500 Series® or Simatic® 505 I/O base.

Features

1500V channel-to-channel isolation

1500V channel-to-backplane isolation

Sourcing and sinking applications

Indicator LEDs for each channel

2580. 2581 and 2582 16-Point

Isolated Discrete Input Modules

Specifications

Inputs Per Module: 16 Isolation:

1500 VDC channel-to-channel

1500 VDC channel-to-backplane

Input Voltage:

2580: 95-132 VAC

2581: 12-56 VDC, 7-42 VAC

2582: 90-146 VDC

Input Current: 7 mA nominal per circuit

Turn ON Time:

2580: 1 AC cycle

2581/2582: 1.7 mSec nominal Turn OFF Time:

2580: 1 AC cycle

2581/2582: 7.2 mSec nominal

Turn ON Time:

2580: 1 AC cycle

2581/2582: 1.7 mSec nominal

Turn OFF Time:

2580: 1 AC cycle

2581/2582: 7.2 mSec nominal

Operating Characteristics for Typical Input:

2580:

Turn ON       85 VAC 2.85 mA

Turn OFF      80 VAC 1.43 mA

Nominal     120 VAC 4.0 mA

2581:

Turn ON      8.76 VDC 1.65 mA

Turn OFF     7.76 VDC 1.43 mA

Nominal       24 VDC 4.90 mA

2582:

Turn ON          63 VDC     1.93 mA

Turn OFF            60 VDC 1.79 mA

Nominal       125 VDC   3.82 mA

Connector: 2500-40F Removable

Wire Gauge: 14-22 AWG

Backplane Power: 1 Watt (maximum)

Module Size: Single wide

Shipping Weight: 1.5 lb. (0.68 Kg)

Checking Module Operation

You must check to see that the module is configured in the

memory of the PLC. This is important because the module will

appear to be functioning regardless of whether it is communi

cating with the PLC. To view the PLC I/O configuration chart

listing all slots on the base and the inputs or outputs associat

ed with each slot, refer to your Programming Manual. An ex

ample chart is shown in the following figure.

I/O MODULE DEFINITION FOR CHANNEL . . . 1 BASE……….0

I/O

SLOT  ADDRESS   NUMBER OF BIT AND WORD I/O    SPECIAL

X    Y        WX   WY      FUNCTION

01 ......... 0001 ........1 6 ..... 00 ....... 00 ...... 00…………….NO

02 ......... 0000 .........00 ...... 00 ....... 00 ...... 00…………….NO

15 ......... 0000 .........00 ...... 00 ....... 00 ...... 00…………….NO

16 ......... 0000 .........00 ...... 00 ....... 00 ...... 00…………….NO

I/O Configuration Chart

In this example, the 16-point discrete input module is inserted

in slot 1 in I/O base 0. Data appears as 16 "X" locations starting

at "X1". For your particular module, look in the chart for the

number corresponding to the slot occupied by the module. If bit

locations appear on this line, then the module is registered in

the PLC memory and the module is ready for operation.

If the line is blank or erroneous, re-check the module to ensure

that it is firmly seated in the slots. Generate the PLC I/O config

uration chart again. If the line is still incorrect, contact your local

distributor or CTI at 1-800-537-8398 for further assistance.