4
Specifications are subject to change without notice (26.10.99)
PDI 40
Front Panel Description
1
” ” and ” ”
-
Up and down keys for selecting programming parameters.
- S + Up and down Keys for value programming.
2. Display
4-digit (maximum read-out 7000).
Alphanumeric indication by means of 7-segment display for:
- Displaying of the measured value, over-range, burn-out
and programming indications.
- Indication of programming parameters.
3. LED’s
4 red LEDs for the indication of:
- process variable under (–) the setpoint limit
- process variable over (+) the setpoint limit
- activation of the first output (out 1)
- activation of the second output (out 2)
1 green LED for the indication of the process variable equal
to the setpoint.
1. Key-pad
Set-up and programming procedures are easily controlled
by the 3 pushbuttons.
“S”
- Key to enter the programming procedure
(instrument configuration)
2
3
Output Controls
ON/OFF control
ON/OFF control
Fig. 1
Fig. 2
Neutral zone control
Fig. 3
Dynamic setpoint
Fig. 4
-d
+ d = positive hysteresis
dB = dead band
= negative hysteresis
drb = half band parameter
dSI = step increase
dSt = time interval between two step increases