CTI 2552-A 8-Channel Isolated RTD Input Module

2552-A 8-Channel Isolated RTD Input Module

The 2552-A is a high-speed 8-channel isolated RTD input module designed to be compatible with the 2500 Series® PLC I/O base.

The 2552-A translates RTD input signals into scaled temperature values and millivolt input signals into equivalent digital words.

Features

Fast 2 mSec update time per channel

Supports 100Ω platinum and 120Ω nickel RTDs

Isolated 1500V channel-to-channel

Isolated 1500V channel-to-PLC backplane

User selectable digital filtering

Specifications

Classic

Input Channels: 8 RTD input channel, independently isolated

and configurable

RTD Types:

Ω TCR = 0.003850. Ω/Ω/°C

European DIN 43760 -198 °C to 849.8 °C (-327.6°F to 1561.6°F)

Ω TCR = 0.00672. Ω/Ω/oC

Temperature Range: -79.8°C to 260.0°C (-111.6°F to 500.0°F)

Other RTD types by special request: 0Ω Cu

Absolute Temp Accuracy: +0.4°C (+0.8°F)

Millivolt Range: 0 to 103.04 Millivolts

Millivolt Input Impedance: >10KΩ @ 60Hz

Absolute Millivolt Accuracy: +0.5% full scale or +500µV

Lead Compensation: 20Ω per lead wire

Bias Current to RTD Probe: 250 microamps

Digital Filtering Time Constant: 0.3 Sec

Output Units: Degrees C or F

Repeatability: 0.05% full scale

2500 Series®  PLC System

Description

Resolution: 0.025% full scale

Update Time: 2msec per channel

Common Mode Rejection: >110db @ 60Hz (digital filtering

disabled)

Normal Mode Rejection: >145db @ 60Hz (digital filtering

enabled)

Input ESD Protection: 20.000V

The2552-A is a high-speed 8-channel isolated RTD

input module designed to be compatible with the CTI

2500 Series® or Simatic® 505 I/O base in local,

remote I/O, and Profibus configurations. The 2552-A

translates RTD input signals into a scaled

temperature value.

Features

Product Bulletin

 CTI 2500 Series® or Simatic® 505 base format

 1500V channel-to-channel isolation

 1500V channel-to-PLC backplane isolation

 Fast 2msec update time per channel

 Detects open in RTD or field wiring

 Compensates for lead wire resistance

 Supports 0 - 100 millivolt inputs on any

channel

Overrange Protection: 20 VDC input to common

Isolation: 1500V channel-to-channel

1500 VDC channel-to-PLC

Connector: Fixed 32 position terminal strip

Wire Gauge: 18-24 AWG

Backplane Power: 2.75W @ 5 VDC

Module Size: Single-wide

Shipping Weight: 1.5 lb. (0.68 Kg)