Parker PDRD Series, User Manual

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PDRD250
4
English
b) EXTERNAL --- if there is an external drain
(24VAC)
.
To change operation mode, use the parameter d3 (see par. 5.3 in
List of parameters).
Y
Only set the EXTERNAL mode in absence of the solenoid
valve. Otherwise the relative coil could become damaged.
Alarm log
Contains the descriptions of the last alarms (max. 8).
Press
é
for 5 seconds: the keypad now operates in Alarm
MENU mode and the events can be scrolled with-
z
and
é
.
Every event is displayed with “ALx” (x=1---8).
AL1 = most recent event.
If there are no events “--- --- ---” appears.
To view the details of the event, press
x
:
ALx
1
2
3
4
5
6
Alarm code
Thousands of hours
Hours
Dew point
Evaporation temperature
Compressor discharge temperature
Scroll with
z
and
é
.
5.3 Parameters
Accessing parameters
Press
z
and at the same time
é
: the keypad now operates
in Parameters MENU mode and the parameters can be scrolled
with
z
and
é
.
List of parameters
A1 Sets the unit of measure for dew point in ˚ C or ˚ F.
A2/A3
Total hours of dryer operation = A2
(display only).
A4/A5
Like A2/A3 but for hours of refrigeration compressor opera-
tion.
A6
Sets Hd Warning intervention temperature (see par. 5.4 in
List of alarm/warnings).
A7 Inhibits remote OFF command.
b1 Sets the dryer address for serial communications.
b2 Sets the serial communication speed.
b3 Not available
b5 Refrigerant evaporation temperature.
b7 Not available
b8 Compressor discharge (delivery) temperature.
b9 Not available
C5
Dryer model:
--- 0 models PDRD250---1200
--- 1 models PDRD1400---3000
C7 Not available
C29 Must be set to “0”.
C36
Operating logic of the alarm/machine status relay.
0 = relay energised when dryer is running, de---energised if
in warning/alarm status.
1 = relay de---energised when dryer is running, energised if
in warning/alarm status.
2 = relay de---energised when dryer is not running,energised
when running.
C37 Not available
d1
Sets the seconds of condensate drain opening (if set in
TIMED mode).
d2 Like d1 , but for seconds closed.
d3
Sets condensate drain operation mode:
--- tIM = TIMED
--- Con = EXTERNAL (24VAC)
Changing parameters
After displaying the parameter, press
x
, change with
z
and
é
, then press
x
to confirm.
Press
y
to return to STANDARD mode.
5.4 Alarms and Warnings
Alarms cause the dryer to switch off.
Warnings only cause a signal.
In the case of Alarm or Dew Point Sensor Warning (dSE),
[
displays the alarm code. In the case of a Warning,
[
alterna-
tively displays the fault code and the dew point and WARNING
LED comes on.
If an alarm occurs:
1) Identify and eliminate the cause;
2) press
z
to reset the alarm;
3) press
x
to restart the dryer.
If a warning without automatic reset occurs:
1) identify and eliminate the cause;
2) press
z
to reset the warning.