West Control Solutions MRC 7000 Controller Manual - Manual (Page 71)

71
ALARM ADJUSTMENTS
Process Alarm -9999 to 9999 units
Deviation Alarm -3000 to 3000 units
Deviation Band Alarm 1 to 3000 units
Hysteresis 0 to 300 units
CONTROL OUTPUTS
Relay SPST 115 VAC: 5.0A Resistive, 1/8HP or 250VA
230 VAC: 2.5A Resistive, 1/8HP or 250VA
SSR Driver Open collector output
Short circuit protected @ 100mA maximum
Provides 4VDC at 20mA or 3VDC at 40mA
mADC Current 4-20 or 0-20 mADC into 650 ohms maximum load
DISPLAY
Digital Display Two possible; one per installed pen. Red LED’s 0.56" high.
Status Indicators LED indicators for Output 1, Output 2, Manual Operation, Alarm,
Setpoint, minus sign and process value units (
°
C,
°
F, or E).
RECORD
Chart 10 in circular chart; 100 charts furnished with each instrument if
standard range
Chart Range -9999 to 9999
°
/ units
Chart Drive DC stepper motor
Chart Rotation User configurable from 0.1 to 999.9 hours per revolution
Pen Type Disposable Fiber-tip
Pen Color Pen 1-Red, Pen 2-Green
Pen Response Time < 9 seconds over chart span
Accuracy
±
1.0% of chart span max. error from displayed value
Chart Rotation Accuracy
±
0.5% of Chart Rotation Time
DIGITAL COMMUNICATIONS
Type RS-422/485 serial communications port. Half-duplex bi-directional
communications.
Character Format ASCII
Protocol Per ANSI X3.28 subcategories 2.5 & A4
Configuration User configurable to Monitor (read only) or Normal (read and write)
Bit Rate User configurable to 300, 600, 1200, 2400, 4800, or 9600 bits per
second
Address User configurable for each pen; 0 to 99