CTI 2553-A 2-Channel Mag Meter Input Module

2553-A 2-Channel Mag Meter Input Module

The 2553-A is designed for precise measurement of mag meter or turbine meter pulses both at low speeds and high speeds (Reflex Counter Mode).

The 2553-A can also be used to compensate for measurement errors due to wheel wobble (N-tooth counting mode).

IMPORTANT NOTE: 2553-A HAS BEEN MATURED.  MOST FUNCTIONS OF THIS PRODUCT CAN BE REPLACED BY OUR 2502 2-CHANNEL HIGH SPEED COUNTER INPUT MODULE, WHICH SHOULD BE USED ON ALL NEW DESIGNS.

Features

Reflex counter

N-tooth mode counting

Isolated 1500V channel-to-channel

Isolated 1500V channel-to-PLC backplane

Reports measurement in frequency or period

Description

The 2553-A 2-Channel Mag Meter Input Module

rapidly measures the frequency of a magnetic pulse

tachometer with high resolution. It is designed to be

compatible with the CTI 2500 SeriesTM or Simatic®

505 I/O base in local, remote I/O, and Profibus

configurations.

Fast update time and high accuracy across the full

frequency specification make the 2553-A ideal for

gas turbine speed mea- surement applications.

Features

• Reflex counter

• N-tooth mode counting

• 1500 VDC isolation channel-to-channel

• 1500 VDC isolation channel-to-backplane

• Reports measurement in frequency or period

Specifications

Classic

Channels: 2 Isolated Mag Meter Inputs

Input Voltage Range: 140 mV to 50 VRMS

(differential input into 10 KΩ)

200 mV to 70 V Peak

Input Frequency Range: 78 Hz to 65 KHz

Frequency Roll-Off : 3 dB at 20 KHz

6 dB per octave

Input Protection: 50 VRMS continuous

20.000 Volts ESD

Digital Filtering: User-selectable (50 mS

Time Constant)

Update Time: 7 mSec for all channels

Accuracy: ±1 Hz

Isolation: 1500 VDC channel-to-channel

1500 VDC channel-to-PLC

Connector: Removable

Wire Gauge:  12 -26 AWG

Backplane Power: 2.5 Watts @ +5 VDC

Module Size: Single-wide

Shipping Weight: 1.5 lbs (0.68 Kg)