West Control Solutions MRC 5000 Controller Manual - Manual (Page 26)

26
Appendix B - Specifications
INPUTS
Input Types/Range Type Range
Thermocouple J 0
°
C to 760
°
C 0
°
F to 1400
°
F
K 0
°
C to 1360
°
C 0
°
F to 2500
°
F
T -200
°
C to 400
°
C -330
°
F to 750
°
F
R 200
°
C to 1650
°
C 400
°
F to 3000
°
F
S 200
°
C to 1650
°
C 400
°
F to 3000
°
F
RTD 100 ohm Platinum -140
°
C to 400
°
C -220
°
F to 750
°
F
.00385 ohms/ohm/
°
C
Current DC 0 to 20mA, 4 to 20mA
Internal 4.7 ohm Shunt Resistor
Voltage DC 0 to 25mV, 0 to 50mV, 10 to 50mV, 0 to 5 V, 1 to 5 V
Impedance > 100M ohm for TC and mV inputs
100K ohms for 5V inputs
4.7 ohms for mA inputs
RTD Excitation Current 150 microamps, typical
Input Scan Rate 1 scan per second for non-RTD inputs
1 scan per 1.2 seconds for RTD inputs
Input Correction Offset Adjustment, -999 to 999 units
Sensor Fault Detection Display goes to "SnSr" and pen goes upscale if a sensor break is detected
No sensor break can be detected for zero based Volt and Milliamp ranges
Display goes to "Hi" 10% above span.
Display goes "Lo" 10% below span or zero, whichever is higher.
.
INPUT PERFORMANCE
Performance Under Reference Condition:
Measurement Error
Type J, K, T, R, S, and RTD:
±
0.25% of span
±
1 degree
mA, mV, and VDC:
±
0.25% of scaled span plus 1 least significant digit
Cold Junction Compensation Error
±
0.2
°
C @ 25
°
C
Cold Junction Compensation Rejection 0.04
°
/
°
C deviation from 25
°
C
Linearization Error TCs:
±
0.25
°
C typical,
±
0.5
°
C worst case with expectations
RTDs:
±
0.1
°
C typical,
±
0.3
°
C worst case
Ambient Temperature Error
±
0.01% of span per
°
C deviation from 25
°
C
Common Mode Rejection >120 dB at 50/60 Hz, 260 VAC max.
Normal Mode Rejection 85 dB minimum @60Hz or greater
Isolation Universal input isolated from all outputs at 240VAC
Inputs share a common signal ground
Reference Conditions
Ambient Temperature
25
°
C
Relative Humidity 60 - 70%
Supply Voltage 115 VAC, 60 Hz
Source Resistance < 10 ohms for TC input
Lead Resistance < 0.1 ohm/lead balanced (Pt100)