Automationdirect.com prosense PPC5 Series - Page 273

14-9
PPC Manual Revision 1
Errors during Operation (3)
The errors shown below may occur during operation.
PV display
(Operation
Display)
Setpoint display
(Operation
Display)
Status
indicator
(Operation
Display)
Parameter that
displays error
details
Error description
Cause and diagnosis
Remedy
AT,E
Normal indication
–
Setup
parameter
(PV1.E/PV2.E)
Auto-tuning time-out
(Loop 1, Loop 2)
Auto-tuning does not end even
when 24 hours have elapsed after
the start of tuning.
Check the process.
Hold down any key
to erase the error
indication
Normal
indication
0.000 00000
(Decimal point
on the left of the
Symbol display
blinks)
–
Setup
parameter
(OP.ER)
Communication error
(RS-485
communication)
Framing parity error
󰀨
Inter-character time-out
Checksum error (PC link
communication with checksum)
CRC check error (Modbus/RTU)
LRC check error (Modbus/ASCII)
Check the
communication
parameters.
Recovery at normal
receipt.
Hold down any key to
stop blinking.
Normal
indication
0.000 00000
(Decimal point
on the left of the
Symbol display
blinks)
–
Setup
parameter
(OP.ER)
Communication
error (coordinated
operation)
Inconsistence of loop between
coordinated master and slaves
Check the
communication
parameters.
Recovery at normal
receipt.
Change from remote
to local mode to stop
blinking.
When the mode is
changed from remote to
local, SP tracking does
not work even if it is set
to ON.
Communication from coordinated
master is interrupted for 2 seconds.
Normal
indication
0.000 00000
(Decimal point
on the left of the
Symbol display
blinks)
–
Setup
parameter
(OP.ER)


Download the user

Normal
indication
Normal indication
Rightmost
decimal point
on Symbol
display blinks.
Setup
parameter
(PA.ER)
Faulty FRAM
Writing (storing) data to FRAM is
impossible.
Faulty, Contact
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Chapter 14: Troubleshooting