Fuji Electric FRENIC-HVAC User Manual page 43

Item
Frequency setting
Acceleration/
deceleration time
Frequency limiter
(Upper and lower limit
frequencies)
Bias frequency
Analog input
Jump frequency
Auto-restart after
momentary power
failure
Hardware current
limiter
*2) Available in the ROM version 2400 or later.
Keypad: Settable with and
External volume: Can be set with external frequency command potentiometer. (1 to 5 kΩ
1/2 W)
Analog input: 0 to ±10 V DC (±5 V DC) / 0 to ±100% (terminals [12] and [V2]),
0 to +10 V DC (+5 V DC) / 0 to +100% (terminals [12] and [V2])
: +4 to +20 mA DC / 0 to 100% (terminal [C1])
0 to +20 mA DC / 0 to 100% (terminal [C1])
UP/DOWN operation:
Frequency can be increased or decreased while the digital input signal is ON.
Multistep frequency: Selectable from 16 different frequencies (step 0 to 15)
Link operation: Frequency can be specified through RS-485. (Standard setting)
Frequency setting: Two types of frequency settings can be switched with an external signal
(digital input). Remote/local switching, link switching
Auxiliary frequency setting: Inputs at terminal [12], [C1] or [V2] can be added to the main
setting as auxiliary frequency settings.
Inverse operation : Switchable from "0 to +10 VDC/0 to 100%" to
"+10 to 0 VDC/0 to 100%" by external command.
: Switchable from "4 to +20 mA DC/0 to 100%" to
"+20 to 4 mA DC/0 to 100%" by external command.
: Switchable from "0 to +20 mA DC/0 to 100%" to
"+20 to 0 mA DC/0 to 100%" by external command.
Pattern operation: Up to 7 steps can be specified.
Setting range: 0.00 to 3600 s
Switching: Up to four types of acceleration/deceleration time can be set or selected
individually (switchable during running).
Acceleration/deceleration pattern:
Linear acceleration/deceleration, S-shape acceleration/deceleration (weak, strong),
Curvilinear acceleration/deceleration (acceleration/deceleration maximum capacity of
constant output)
Deceleration mode (coast-to-stop):
Turning a run command OFF causes the motor to coast to a stop.
Forcible stop deceleration time: Deceleration stop by STOP ("Force to stop").
• Specifies the upper and lower limits in Hz.
• Possible to choose the processing (Hold the output frequency at the lower limit or
Decelerate to a stop) to be applied when the reference frequency drops below the lower
limit.
• Can be set with analog input (terminal [12], [C1], and [V2]).
• Bias of reference frequency and PID command can be independently specified within
the range of 0 to ±100%.
• Gain : Setting range of 0 to 200% (for each terminal)
• Offset : Setting range of -5.0 to +5.0%
• Filter : Setting range of 0.00 to 5.00 s
• Possible to set the display unit, maximum scale, and minimum scale under PID control.
• Three operation points and their common jump width (0 to 30.0 Hz) can be set.
• Six operation points and their common jump width (0 to 30.0 Hz) can be set. (*2)
• Resonance points can be detected automatically and be set the jump frequency
automatically.
• Trip at power failure: Trip immediately at power failure.
• Trip at power recovery: Coast to a stop at power failure and trip at power recovery.
• Continue to run: Continue to run using the load inertia energy.
• Start at the frequency applied before momentary power failure: Coast to a stop at power
failure and start after power recovery at the frequency applied before momentary stop.
• Start at starting frequency: Coast to a stop at power failure and start at the starting
frequency after power recovery.
Limits the current by hardware to prevent an overcurrent trip from being caused by fast
load variation or momentary power failure, which cannot be covered by the software
current limiter. This limiter can be canceled.
Explanation
keys
2-10
Remarks
"+1 to +5
VDC"
can be
adjusted
with bias
and
analog
input
gain.