West Control Solutions Pro-EC44 - Manual (Page 254)

Pro-EC44 2-Loop Graphical Profile Controller & Recorder
Pro-EC44 Product Manual - 59540-1 October 2013 Page 247
DC Linear Performance
Display Scaling: Scalable from -2000 to 100000 for any DC Linear input type.
Minimum Span: 100 display units.
Decimal Point
Display: Decimal point selectable from 0 to 3 places.
Note: Rounds to 2 places above 99.999; 1 place above 999.99 and no
decimal above 9999.9.
DC Input Multi-Point
Linearization: Up to 15 scaling values can be defined anywhere between 0.1 and 100%
of input.

Measurement
Accuracy: 
0.1% of span

1LSD (Least significant display digit).
Maximum Overload: 1A (mA input terminals), 30V (voltage input terminals) at 25°C ambient.
Sensor Break
Protection: Applicable for 4 to 20mA, 1 to 5V and 2 to 10V ranges only.
Break detected within two seconds. Process Control outputs go to the
pre-set power value. Low and Senor Break Alarms operate.
Input Functions
Function Input 1 Input 2
Process Control Loop 1 Loop 2
Cascade Control Master Loop Slave Loop
Ratio Control Controlled Variable Un-controlled Variable
Remote Setpoint (RSP) - RSP for loop 1
Valve Position Feedback - Valve Position for loop 1
Note: RSP Linear inputs only, scalable between -9999 to 10000, but actual
setpoint value is kept within the setpoint limit settings.
Auxiliary Input
Auxiliary Input A Types & Ranges
Input
Type Ranges
mA DC 0 to 20mA 4 to 20mA
V DC 0 to 5V 1 to 5V
2 to 10V 0 to 10V
Auxiliary Input Performance
Input Sampling rate: 4 samples per second.
Input Resolution: 16 bit ADC.
Input Function: Scalable as a Remote Setpoint (RSP) between ±0.001 & ±10000
Scaled input value used for setpoint (but constrained by setpoint limits).

Measurement
Accuracy: 
0.25% of input span

1LSD (Least significant display digit).
Input Resistance:
V DC: 47KΩ
mA DC: 10
Ω
Other ranges: Greater than 10M

resistive
Input protection: Voltage input: will withstand up to 5x input voltage overload without
damage or degradation of performance in either polarity.
Current input: will withstand 5x input current overload in reverse
direction and up to 1A in the normal direction.