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)