CTI  2555-A 16-Channel Analog Input Module

CTI  2555-A 16-Channel Analog Input Module

The 2555-A is a high-speed 16-channel differential analog input module designed to be compatible with the 2500 Series® I/O base. The 2555-A translates analog input signals into an equivalent digital word.

Features

Replaces Siemens® 505-2555

Fast 6 mSec update time per channel

No external power supply required for module

Isolated 1500V channel-to-PLC backplane

Accepts voltage or current input signals

Description

The 2555-A is a high-speed 16-channel differential

analog input module designed to be compatible with

the CTI 2500 Series and Simatic® 505 I/O base. The

2555-A translates analog input signals into an

equivalent digital word.

Features

• Simatic® 505 I/O base format

• 1500 VDC channel-to-PLC backplane isolation

• 14 Bits resolution Unipolar, 13 Bits + Sign Bipolar

• Fast 5.9 mSec update time

• No external power supply required for module

• No external current resistor required

• Microprocessor self-diagnostics

• Supports Immediate I/O

Specifications

Input Channels:

16 differential analog input channels

140 VRMS channel-to-channel CMR

Signal Range:

Unipolar: 0 to 5 VDC, 0 to 10 VDC, or 0 to 20 mA

Bipolar: -5 to +5VDC, -10 to +10VDC, or -20 to

+20 mA

Update Time: 5.9 mSec no filtering

8.2 mSec digital filtering enabled

Filtering Time Constant: 80 mSec

DC Input Resistance:

Voltage Mode: 680K

Current Mode: 250

Repeatability: 0.008%

Accuracy:

Voltage Mode:0.057% of full scale @ 25°C

Current Mode: 0.2% of full scale @ 25°C

Resolution:

Unipolar:

14 bit plus sign

0-5 VDC range = 0.3125 mV/step

0-10 VDC range = 0.625 mV/step

0-20 mA range = 1.22 µA/step

Bipolar:

13 bit plus sign

+5 to -5 VDC range = 0.625 mV/step

+10 to -10 VDC range = 1.25mV/step

Common Mode Rejection:

>86 db @ 60Hz (digital filtering disabled)

Normal Mode Rejection:

>45 db @ 60 Hz (digital filtering enabled)

Connector: 2500-40F

Wire Gauge: 14-22 AWG

Backplane Power: 5.0 Watts

Module Size: Single-wide

Input Overrange Protection: 500 V

Isolation: 1500 VDC channel-to-PLC

Shipping Weight: 1.5 lbs (0.68 Kg)