Measurement Computing SWITCH AND SENSE 8/8 - Manual (Page 17)

4-1
Chapter 4
Specifications
Typical for 25 °C unless otherwise specified.
Specifications in italic text are guaranteed by design.
USB compliance
Device type USB version 1.1 low speed (1.5 Mbs) device
Device compatibility USB 1.1, USB 2.0
Power consumption
5 V USB Bus power 20 mA typical , 25 mA max.
All relays off
30 mA typical, 40 mA max. External 9V unregulated supply
(Power supply included)
All relays on 500 mA typical, 625 mA max.
Power supply voltage range 7.5V – 20V
Output specification
Number 8
Contact configuration
8 FORM C (SPDT) NO, NC and Common available at connector
.
Contact rating 6 amperes (A) @ 120 volts AC (VAC) or 28 volts DC (VDC) resistive
Contact resistance 100 milliohms (mΩ) max
Operate time 10 milliseconds(ms) max
Release time 5 ms 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
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 –1.5VDC max.
DC
Input range: ! 30 VDC max
Input high: 3.0 Vrms min (50-1000 Hz)
Voltage range
AC (with filter)
Input low: 1.5 Vrms 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