West Control Solutions MRC 8000 - Manual (Page 71)

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RECORDING
Pen Type Disposable fiber tip
Pen Color Pen 1 - Red
Pen 2 - Green
Chart Size 12 inch
Chart Drive Stepper motor
Chart Rotation User configurable: 0.1 to 999 hours, in 0.1 hour increments
Chart Span Bottom and top of span, -9999 to 9999 units
Filtering 1 to 20 scans averaging (affects display and recording)
RECORDING PERFORMANCE
Chart Recording Accuracy 0.5% of chart span reference accuracy
Resolution 0.15% of chart span
Dead Band 0.3% of chart span
Response Time 20 seconds for full scale travel
Chart Rotation Accuracy
±
0.5% of rotation time, assuming all backlash removed
OPERATOR INTERFACE
Display Four digit, 0.56" high, red, seven segment, LED display
Resolution TCR and RTD: 0.1 and 1 degree
mV, V and mA: 0.001, 0.01, 0.1, and 1 unit
Status Indicators Recorders: ALRM1 and ALRM2; red LEDs
Controllers: MAN, OUT1, OUT2, ALRM; yellow, red, yellow, red LEDs
Keypad Three keys for programming and unit operation
One or Two Auto/Man keys on controllers
Display Modes Recorders: Process value(s)
Controllers: Process value(s) or deviation(s), with or without setpoint sequentially
ALARMS
Number Up to two process alarms for each of two inputs
Type Recorder: Process high or low
Controllers: Process, deviation, or band
Hysteresis Fully adjustable, 0 to 300 units, straddles alarm point
Security Alarm setpoint changes can be prohibited
Sensor Fault Action Alarms work normally in “Hi” and “Lo” conditions
Alarm relays are deenergized in a “SnSr” sensor break condition
ON/OFF OUTPUTS
On/Off Outputs Assignable to alarm or control outputs
Relays SPDT, contacts rated 5 amps resistive at 115 VAC,
2.5 amps resistive at 230 VAC, 1/8 HP at 230 VAC (single phase),
250 VA at 115/230VAC
Solid State Relay Driver Open collector output, can provide 40mA at 3 VDC or 20mA at 4 VDC
Short circuit current is limited to 100mA
CURRENT OUTPUTS
Drivers Assignable to process value or setpoint retransmission or control outputs
Output Span 0 to 20mA or 4-20mA, nominal
Resolution 0.02 % of 20mA; 12 bits over a 0 to 25.6mA span
Accuracy
±
0.1% to 20mA span reference accuracy
Compliance 650 ohm load