4
3.1
Set Up Input (Process Variable, Remote Set Point and Position Feedback)
Information.
• Universal inputs – mV, mA, V, THC, RTD and resistance.
• Internal cold junction compensation.
• Linearization – of temperature sensors to allow use of non-linearizing transmitters or any electrical input.
• Programmable fault levels and actions.
• Digital filter – reduces the effect of noise on inputs.
Example A – setting up:
•
a current input of 4 to 20 mA
•
displaying a range of 0 to 200psi
•
a fault detection level 10% above 200psi (engineering/display range) and 10% below 0psi (engineering/display range)
•
in the event of a fault being detected and/or the fault detection level being exceeded the process variable is driven
downscale.
Example B – setting up:
•
a Type K thermocouple
•
displaying temperature in
°
F
•
displaying a range of 0 to 2000
°
F
•
a fault detection level 10% above 2000
°
F (engineering/display range) and 10% below 0
°
F (engineering/display range)
•
in the event of a fault being detected and/or the fault detection level being exceeded the process variable is driven upscale.
Input
Type
Linearizer
Type
5/2
3/2
√
RTD
THC N
THC B
THC E
THC J
THC T
THC S
THC R
THC K
None
Temp. Units
Engineering Range
(Display Range)
Programme
Filter
°
F
°
C
None
Fault Detection
Levell
10 %
RTD
THC
Current
Voltage
Millivolts
Low resistance
High resistance
Fault Detection
Level
10 %
Broken Sensor
Protection Drive
Upscale
Downscale
Electrical
Range
4.0
(Input Range Low)
20.0
(Input Range High)
Value set to 0
Value set low
Value set high
200
0
220
–20
Input
Type
Linearizer
Type
5/2
3/2
√
RTD
THC N
THC B
THC E
THC J
THC T
THC S
THC R
THC K
None
Temp. Units
°
F
°
C
None
RTD
THC
Current
Voltage
Millivolts
Low resistance
High resistance
Engineering Range
(Display Range)
Programme
Filter
Fault Detection
Levell
10 %
Fault Detection
Level
10 %
Broken Sensor
Protection Drive
Upscale
Downscale
Value set to 0
Value set low
Value set high
2000
0
2200
–200
…3
BASIC CONFIGURATION LEVEL