This function is used to allow the inverter to ignore minor faults during emergency situations, such as fire, and provides continuous operation to fire pumps.
When turned on, Fire mode forces the inverter to ignore all minor fault trips and repeat a Reset and Restart for major fault trips, regardless of the restart trial count limit. The retry delay time set at PR. 10 (Retry Delay) still applies while the inverter performs a Reset and Restart.
Fire Mode Parameter Settings
Group Code Name LCD Display Parameter Setting Setting
Range Unit
Ad
80 Fire Mode selection Fire Mode Sel 1 Fire Mode 0–2 - 81 Fire Mode frequency Fire Mode
Freq 0-60 0–60
82 Fire Mode run direction Fire Mode Dir 0–1 0–1
Group Code Name LCD Display Parameter Setting Setting Range Unit count Cnt In 65– 71 Px terminal configuration Px Define (Px: P1– P7) 51 Fire Mode 0–54 - The inverter runs in Fire mode when Ad. 80 (Fire Mode Sel) is set to ‘2 (Fire Mode)’, and the multi- function terminal (In. 65-71) configured for Fire mode (51: Fire Mode) is turned on. The Fire mode count increases by 1 at Ad. 83 (Fire Mode Count) each time a Fire mode operation is run.
Fire mode operation may result in inverter malfunction. Note that Fire mode operation voids the product warranty – the inverter is covered by the product warranty only when the Fire mode count is ‘0.’
Fire Mode Function Setting Details Code Description Details Ad.81 Fire Mode frequency Fire mode frequency reference
The frequency set at Ad. 81 (Fire mode frequency) is used for the inverter operation in Fire mode. The Fire mode frequency takes priority over the Jog frequency, Multi-step frequencies, and the keypad input frequency.
Dr.03 Acc Time / Dr.04 Dec Time
Fire mode Acc/Dec times
When Fire mode operation is turned on, the inverter accelerates for the time set at Dr.03 (Acc Time), and then decelerates based on the deceleration time set at Dr.04 (Dec Time). It stops when the Px terminal input is turned off (Fire mode operation is turned off).
PR.10 Retry
Delay Fault trip process
Some fault trips are ignored during Fire mode operation. The fault trip history is saved, but trip outputs are disabled even when they are configured at the multi-function output terminals.
Fault trips that are ignored in Fire mode
BX, External Trip, Low Voltage Trip, Inverter Overheat, Inverter Overload, Overload, Electrical Thermal Trip, Input/Output Open Phase, Motor Overload, Fan Trip, No Motor Trips, and other minor fault trips.
For the following fault trips, the inverter performs a Reset and Restart until the trip conditions are released. The retry delay time set at PR. 10 (Retry Delay) applies while the inverter performs a
Learning Basic Features
Code Description Details
Reset and Restart.
Fault trips that force a Reset Restart in Fire mode
Over Voltage, Over Current1(OC1), Ground Fault Trip
The inverter stops operating when the following fault trips occur:
Fault trips that stop inverter operation in Fire mode
Learning Advanced Features
5
Learning Advanced Features
This chapter describes the advanced features of the S100 inverter. Check the reference page in the table to see the detailed description for each of the advanced features.
Advanced Tasks Description Ref.
Auxiliary frequency operation
Use the main and auxiliary frequencies in the predefined formulas to create various operating conditions. Auxiliary frequency operation is ideal for Draw Operation* as this feature enables fine- tuning of operation speeds.
p.122
Jog operation
Jog operation is a kind of a manual operation. The inverter operates to a set of parameter settings predefined for Jog operation, while the Jog command button is pressed.
p.126 Up-down operation Uses the upper and lower limit value switch output signals (i.e.
signals from a flow meter) as Acc/Dec commands to motors. p.129 3-wire operation 3-wire operation is used to latch an input signal. This configuration is
used to operate the inverter by a push button. p.130 Safety operation
mode
This safety feature allows the inverter’s operation only after a signal is input to the multi-function terminal designated for the safety operation mode. This feature is useful when extra care is needed in operating the inverter using the multi-purpose terminals.
p.131
Dwell operation
Use this feature for the lift-type loads such as elevators, when the torque needs to be maintained while the brakes are applied or released.
p.133 Slip compensation This feature ensures that the motor rotates at a constant speed, by
compensating for the motor slip as a load increases. p.134 PID control PID control provides constant automated control of flow, pressure,
and temperature by adjusting the output frequency of the inverter. p.136 Auto-tuning Used to automatically measure the motor control parameters to
optimize the inverter’s control mode performance. p.144 Sensorless vector
control
An efficient mode to control magnetic flux and torque without special sensors. Efficiency is achieved through the high torque characteristics at low current when compared with the V/F control mode.
p.147
Energy buffering operation
Used to maintain the DC link voltage for as long as possible by controlling the inverter output frequency during power interruptions, thus to delay a low voltage fault trip.
p.154 Energy saving
operation
Used to save energy by reducing the voltage supplied to motors
during low-load and no-load conditions. p.155 Speed search
operation
Used to prevent fault trips when the inverter voltage is output while the motor is idling or free-running. p.159 Auto restart operation
Auto restart configuration is used to automatically restart the inverter when a trip condition is released, after the inverter stops operating due to activation of protective devices (fault trips).
Advanced Tasks Description Ref. Second motor
operation
Used to switch equipment operation by connecting two motors to one inverter. Configure and operate the second motor using the terminal input defined for the second motor operation.
p.166 Commercial power
source switch operation
Used to switch the power source to the motor from the inverter
output to a commercial power source, or vice versa. p.167 Cooling fan control Used to control the cooling fan of the inverter. p.168 Timer settings Set the timer value and control the On/Off state of the multi-
function output and relay. p.177
Brake control Used to control the On/Off operation of the load’s electronic braking
system. p.178
Multi-function output On/Off control
Set standard values and turn On/Off the output relays or multi-
function output terminals according to the analog input value. p.179 Regeneration
prevention for press operation.
Used during a press operation to avoid motor regeneration, by
increasing the motor operation speed. p.180 * Draw operation is an openloop tension control. This feature allows a constant tension to be
applied to the material that is drawn by a motor-driven device, by fine-tuning the motor speed using operation frequencies that are proportional to a ratio of the main frequency reference.