RKC INSTRUMENT PF900 User Manual

7. ERROR DISPLAY
IMR02L04-E3
7-3
7.2 Self-diagnostic Error
In an error is detected by the Self-diagnostic function, the PV display shows “Err,” and the SV display
shows the error code. If two or more errors occur simultaneously, the total summation of these error codes is
displayed.
Error
code
Description Action Solution
1
Adjusted data error Display:
Error display (Err)
Output:
All the output is OFF
Produces Fail output when
the Fail output is allocated to
output terminals.
Communication:
Send Error code.
Communication is available.
Turn off the power at once.
If the PF900/901 is restored to
normal after the power is
turned on again, then probable
cause may be external noise
source affecting the control
system. Check for the external
noise source.
If an error occurs after the
power is turned on again, the
PF900/901 must be repaired or
replaced. Please contact RKC
sales office or the agent.
2
Data back-up error
 Back-up action is abnormal
 Data write failure
4
A/D conversion error
 Response signal from A/D
converter is abnormal.
Temperature compensation
error
 The temperature
compensation data is out of
range.
8
Segment level error
 Segment level of the segment
in progress is outside of the
input range.
Display:
Error number and PV/SV
display alternatively.
Output:
Control is continued.
Communication:
Send Error code.
Communication is available.
Set the segment level within
the input range.
1
16
Intercontroller communication
error (Link error)
 No response from the slave
 Error message received from
the slave, Example: Sending
data out of the setting range
or sending data to a
non-existing address
Display:
Error number and PV/SV
display alternatively.
Output:
Continues based on the
operation mode in progress.
Communication:
Send Error code.
Communication is available.
Check connection between the
slave, data to be sent to the
slave, and other settings such
as controller communication
address.
2
No error
display
Watchdog timer error
 The part of an internal
program stops the action.
Display:
ALM lamp ON, other lamps
are all OFF.
Output:
All output is OFF
Communication:
Stop
Turn off the power at once.
If an error occurs after the
power is turned again, the
PF900/901 must be repaired or
replaced.
Please contact RKC sales
office or the agent.
Power supply voltage is
abnormal (power supply
voltage monitoring)
 Reduction in Power supply
voltage
Display:
All display is OFF
Output:
All output is OFF
Communication:
Stop
1
Error display can be released by switching to the Reset mode by front key operation.
2
Error display can be released by pressing the  key and the  key.

RKC INSTRUMENT PF900 Specifications

General

Brand	RKC INSTRUMENT
Model	PF900
Category	Controller
Language	English