Hardy HI 1756-2WS - Manual (Page 16)

HI 1756-WS WEIGH SCALE MODULE
2-2
Common-Mode
Voltage Range 2.5VDC maximum (with respect to earth ground)
Backplane Input
Voltage 5 VDC and 24 VDC
Backplane Current
Load <1 Amp at 5 VDC
0.0125 Amps at 24 VDC (with 4-350 Ohm Load Cells
Backplane Power
Load < 5W at 5 VDC
< .3W at 24 VDC with 4-350 Ohm Load Cells
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
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 -40
o
C to 85
o
C (-40
o
F to 185
o
F)
Humidity Range 0-90% (non-condensing)
Approvals CE Approval
UL, CUL (pending)
Digital Voltmeter Accuracy +/- 2% of full scale
Resolution