Spectrum Controls 1771sc-IFE32 - Manual (Page 45)

Appendix A: Specifications 35
Appendix A
Electrical Specs Electrical Specs Electrical Specs Electrical Specs Electrical Specs
Specification Description
Inputs per module 32 single-ended; 16 differential low level
Module location 17710 I/O chassis – 1 slot
Nominal input voltage +1 to +5 Vdc, 0 to 5 Vdc, -5 to +5 Vdc, -10 to +10 Vdc, 0 to 10 Vdc
Nominal input current +4 to +20 mA, 0 to +20 mA, -20 to +20 mA
Resolution 16 bit binary, 15 bit plus sign in bipolar ranges
Linearity
±
1 LSB
Isolation voltage Channel to back Plane Isolation of 500VDC
Input overvoltage protection Voltage Ranges:
±
20 Volts
Current Ranges:
±
20 mA
Common Mode Voltage
±
15 Volts
Input impedance Voltage Mode: 10 MegaOhms, min; Current Mode: 250 Ohms.
Common mode rejection 90 dB minimum at 50 or 60 Hz (frequency dependent)
Unscaled BCD and binary output to processor 0 to 65,535 for unipolar ranges (0 to 5V, 0 to 20mA, etc)
-32,768 to +32,767 for bipolar ranges (
±
10V,
±
20mA, etc)
Engineering units sent to processor
±
9999 with selectable scaling
Accuracy
Voltage Typ .03% of full scale typical @ 25
°
C.
Voltage Max .05% of full scale Maximum @ 60
°
C.
Note: Accuracy is dependent on the filter frequency selection, range selection, data
format, and input noise.
Voltage Repeatability .03% of full scale Maximum @ 60
°
C.
Current Typ .05% of full scale typical @ 25
°
C.
Current Max .10% of full scale Maximum @ 60
°
C.
Note: Accuracy is dependent on the filter frequency selection, range selection, data
format, and input noise.
Current Repeatability .05% of full scale Maximum @ 60
°
C.
Temp. coefficient 490ms real time auto calibration. Calibration for temp. compensation.
Display format BCD, Two’s complement, or signed magnitude; scaled or unscaled.
Input Filter 7.8Hz, 13.65Hz, 209.6Hz, 1667KHz
Digital Notch Filter, Programmable in groups of 8 inputs.
Channel Update Time See Channel Update Time chart vs filter selection
Single Channel Min 2.1ms 1667Hz filter, no cal
Single Channel Max 120ms 7.8Hz filter, no cal
32 Channel Min 67.2ms 1667Hz filter, no cal
32 Channel Max 3840ms 7.8Hz filter, no cal
Isolation
Channel to Rack 500 VAC Continuous Optical & magnetic
Channel to Channel 12.5V
Group to Group +-15V
Input Protection
±
20VDC continuous, 1500W pulsed for 1msec.
Max Input current voltage or Current mode =
±
50mA
Power Requirements
Internal rack +5v 500mA – Maximum / 400mA Typical
External None
Fusing None – External Customer option.