Hardy HI 1746-WS - Manual (Page 18)

HI 1746-WS WEIGH SCALE MODULE
2-2
Common-Mode
Rejection 110dB at or below 60 Hz
Common-Mode
Voltage Range 2.5VDC maximum (with respect to earth ground)
Backplane Input
Voltage 5 VDC maximum (with respect to earth ground)
Backplane Current
Load 0.250 Amps at 5 VDC
Power +5 VDC +/- 5%
C2 Calibration
Input Isolation from digital section 1000 VDC minimum.
Cable lengths 1000 feet maximum of C2 authorized cable
250 feet maximum of C2 authorized cable (Maximum
of 4 load sensors) with IT Junction box.
Load Cell
Excitation 5 VDC +/- 1.15 W maximum.
Isolation from digital section 1000 VDC minimum
C2 Calibration
Output Isolation from digital section 1000 VDC minimum
Set Point (1 & 2)
Out Discrete outputs (TTL) step function of 0 or +5 VDC
to drive an SSR
Environmental
Requirements
Temperature
Coefficient Less than 0.005% of full scale per degree C for Cal-
LO and Cal-HI reference points
Operating
Temperature
Range 0
o
C to 60
o
C (32
o
F to 140
o
F)
Storage
Temperature
Range -20
o
C to 85
o
C (-4
o
F to 185
o
F)
Humidity Range 0-90% (non-condensing)