Measurement Computing USB-PDISO8/40 - Manual (Page 17)

Chapter 4
Specifications
Typical for 25 °C unless otherwise specified.
Specifications in italic text are guaranteed by design.
Relay specifications
Table 1. Relay Output specifications
Number 8
Contact configuration 8 FORM C (SPDT) NO, NC and Common available at connector .
Contact rating 6 amperes (A) @ 240 volts AC (VAC) or 28 volts DC (VDC) resistive (see connector rating
below)
Contact resistance 100 milliohms (mΩ) max
Operate time 10 milliseconds (ms) max
Release time 10 milliseconds max
Vibration 10 to 55 hertz (Hz) (Dual amplitude 1.5 millimeters (mm))
Shock 10 G (11 ms)
Dielectric isolation 500 V (1 minute)
Life expectancy 10 million mechanical operations, min
Power on RESET state Not energized. NC in contact to Common.
Isolated inputs
Table 2. Isolated input specifications
Number 8
Isolation 500 volts ( V)
Resistance 1.6k ohms (Ω) min.
Input high: +5.0 VDC min or –5.0 VDC min
Input low: +1.5 VDC max. or –1.5 VDC max.
DC
Input range: 30 VDC max
Input high: 6.0 V
rms
min (50-1000 Hz)
Voltage range
AC (with filter)
Input low: 1.5 V
rms
max (50-1000 Hz)
w/o filter 20 µs Response
w/ filter 5 ms
Time constant 5 ms (200 Hz)
Filter control Software programmable at each input.
Filters
Power-up /reset Filters off
4-1