Hardware reference guide

Intelligent/Special Purpose
35013379 02 October 2007 373
Specifications The following table shows the specifications for the EHC20200 High Speed Counter
module.
Specifications
Number of Channels 2 with 2 outputs each
LEDs Active
F
8 Input Status LEDs (Green)
4 Output Status LEDs (Green)
Count Frequency 500 kHz max with differential inputs. 250 kHz max
with single-ended inputs.
Registers Required 6 Words In
6 Words Out
Data Formats
16 Bit Counter 65,535 Decimal
32 Bit Counter 2,147,483,647 Decimal
Discrete Inputs
Operation Modes Incremental
Quadrature
Max Continuous Input Voltage 30 Vdc
Input Threshold
Single Ended Mode
VREF Supply
+ 5 Vdc
+ 12 Vdc
+ 24 Vdc
On State (Vdc)
0 ... 2.0
0 ... 5.0
0 ... 11.0
Off State (Vdc)
3.5 ... 5.0
7.0 ... 12.0
13.0 ... 24.0
Differential Mode (Minimum) 1.8 Vdc
Input Resistance 10 k
Discrete Outputs
Output Levels (1A, 1B, 2A, 2B)
FET Switch ON Supply - 0.4 Vdc
FET Switch OFF 0 Vdc (ground reference)
Max Load Current (each output) 0.5 A
Output Off State Leakage 0.4 mA max @ 30 Vdc
Output On State Voltage Drop 0.4 Vdc @ 0.5 A
Output Protection 36 V transorb for transient voltage suppression
Miscellaneous
Isolation (Channel to Bus) 1780 Vac rms for 1 minute
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123 www.barr-thorp.com