Fuji Electric Frenic lift, Reference Manual

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Analog torque bias (L54 = 0)
Setting L54 data to "0" enables torque bias setting with analog input.
When L54 = 0, assigning a reference torque bias to terminals [12] and [V2] (V2 function) (by
function codes E61 and E63) allows to input a torque bias with analog voltage input, and assigning it
to terminal [V2] (C1 function) (by E62), allows to input a torque bias with analog current input. If no
reference torque bias is assigned to any of terminals [12] and [V2], the analog torque bias is 0 (%).
Terminal commands
TB1
and
TB2
assigned to the general-purpose, programmable input terminals
(by function codes E01 to E08, E98 and E99) are ignored.
When an analog torque bias is specified, adjust the gain with L60 (Driving gain) and L61 (Braking
gain). If L60 (L61) = 100%, analog input voltage -10 to +10 VDC corresponds to -100 to +100% of
the motor rated torque and analog input current 4 to 20 mA corresponds to 0 to 100% of the motor
rated torque, assuming that gain and offset of the analog inputs are set to 100% and 0%
respectively).
- Balancing
With the elevator being balanced (same load as the counterweight), adjust a torque bias amount to
0% relative to the input voltage of the load sensor. This adjustment should be made when the
elevator is stationary with balanced load and the brake applied.
Setting E43 data (LED monitor) to "19" monitors the torque bias balance adjustment value (BTBB)
on the LED monitor. For the multi-function keypad, press the
key in Running mode and select a
target monitor item. Adjust the balance by adjusting the analog input offset with C31 ([12]), C36
([V2] (C1 function)) or C41 ([V2] (V2 function)) so that the monitored data comes to 0 (%). The
monitored data shows the ratio to the motor rating torque in percentages.
- Gain adjustment
(1) The gain adjustment should follow the balance adjustment. Before proceeding to the gain
adjustment, set analog input with C32 ([12]), C37 ([V2] (C1 function)), or C42 ([V2] (V2
function)) to 100 (%).
(2) According to the table below, determine the initial values of the gains at the driving and braking
sides (L60 and L61).
Motor rotational
direction when the
elevator lifts up
When the load increases, the analog
voltage/current input (load sensor)
will:
Initial values of
L60 and L61
data
Function codes to
be set with no load
UP DOWN
Forward
Increase +100 (%)
L61 L60
Decrease -100 (%)
Reverse
Increase -100 (%)
L60 L61
Decrease +100 (%)
(3) Setting E43 data (LED monitor) to "20" monitors the torque bias gain adjustment value (BTBG)
on the LED monitor. For the multi-function keypad, press the key in Running mode and
select a target monitor item.
(4) With no load, run the elevator up at a speed of 2 to 10% of the elevator rated speed. Adjust L61
and L60 data in the forward and reverse direction, respectively, so that the monitored data
comes to approximately 0 (%) when the speed is stabilized. (The monitored data shows the ratio
to the motor rating torque in percentages.)
(5) With no load, run the elevator down at a speed of 2 to 10% of the elevator rated speed. Adjust
L60 and L61 data in the forward and reverse direction, respectively, so that the monitored data
comes to approximately 0 (%) when the speed is stabilized.
For torque bias setting with current input, the input current on terminal [V2] (C1
function) should be within the range from 4 to 20 mA when the elevator is with no load
to the maximum load.
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