Dc linear performance, Input functions, Auxiliary input – West Control Solutions Pro-EC44 User Manual
Page 254: Auxiliary input a types & ranges, Auxiliary input performance
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.