Fuji Electric FRENIC-HVAC User Manual page 47

Item
Option Upon detection of an error in communication between the inverter and an option card, this
communications error function stops the inverter output.
Option error When an option card detects an error, this function stops the inverter output.
STOP key priority: Pressing the
stop even when a run command is given via the terminal block or communications link.
After the stop, the inverter issues alarm Er6.
Start check: To prevent a sudden start, the inverter prohibits any run operations and
Operation protection
displays Er6 if any run command is present when;
- The inverter power is turned ON,
- An alarm is released, or
- A run command source is switched via the communications link.
During tuning of motor parameters, if tuning has failed or aborted, or an abnormal
Tuning error
condition has been detected in the tuning result, the inverter stops its output.
RS-485
When the inverter is connected to a communications network via the RS-485 port designed
communications error
for the keypad, detecting a communications error stops the inverter output.
(port 1)
Data save error during If the data could not be saved during activation of the undervoltage protection function, the
undervoltage inverter displays the alarm code.
RS-485 When the inverter is connected to a communications network via the RS-485 port on the
communications error control terminals DX+ and DX-, detecting a communications error stops the inverter
(port 2) output.
Detects an LSI failure on the power supply printed circuit board, which is mainly caused by
Power supply LSI error
noise, and stops the inverter output.
Mock alarm A mock alarm can be generated with keypad operations.
Current input wire If a break of the current input signal wire is detected, this function stops the inverter output
break detection (Enable/Disable selectable).
PID feedback wire When PID feedback is assigned to the current input, if a wire break is detected, this
break detection function stops the inverter output. (Switchable between Enable and Disable)
Diagnoses the Enable circuit. If any circuit failure is detected, this function stops the
Enable circuit failure
inverter output.
Customizable logic
Issues an alarm if a customizable logic configuration error is detected.
abnormality
Anti-jam function Displays an error if starting has failed due to overcurrent.
Filter clogging
Displays an error if overload is detected under PID control.
prevention
Password protection Entering a wrong password five times causes an alarm.
Fire mode Displays an alarm during running in fire mode (without stopping due to alarm).
• Outputs a relay contact signal if the inverter issues an alarm and stops its output.
Alarm relay output
(for any fault)
•
Upon detection of a failure or warning status that has been defined as a light alarm item, the
inverter displays a light alarm without stopping running.
Light alarm objects
External alarm (OH2), Inverter internal overheat (OH3), Motor overload (OL1), Option
communications error (Er4), Option error (Er5), RS-485 communications error (COM port
1) (Er8), RS-485 communications error (COM port 2) (ErP), Current input wire break
detection (CoF), PID control 1, 2 feedback error detection (PV1, PV2), External PID
Light alarm (warning)
control 1, 2, 3 feedback error detection (PVA, PVb, PVC), Filter clogging error (FoL), DC
fan locked (FAL), Motor overload early warning (OL), Heat sink overheat early warning
(OH), Lifetime alarm (DC link bus capacitor, electrolytic capacitors on printed circuit
boards or cooling fans) (Lif), Reference command loss detected (rEF), Low torque output
(UTL), PTC thermistor activated (PTC), Inverter life (cumulative run time) (rTE), Inverter
life (number of startups) (CnT), PID control 1, 2 alarm (PA1, PA2), External PID control 1,
2, 3 alarm (PAA, PAb, PAC), Mutual operation slave alarm (SLA), Low battery warning
(Lob), Date & time information lost (dtL)
key on the keypad forcibly decelerates the motor to a
key or digital input signal RST resets the alarm stop state.
2-14
Explanation Remarks
Er4
Er5
Er6
Er7
Er8
ErF
ErP
ErH
Err
CoF
PV1
PV2
PVA
PVb
PVC
ECF
ECL
rLo
FoL
LoK
Fod