Toshiba Tosvert VF-AS1 - Manual (Page 153)

E6581301
F-41
6
For a crane/hoist, an elevator application, as lifted
up and down at controlled speeds, the direction of
rotation is frequently reversed. In such cases, the
load can be started smoothly, by adding load
torque into the torque reference equivalent to the
additional torque, when starting acceleration after
releasing the brake.
[Selection of external signals]
2) Selection of tension torque bias input and load sharing gain input
Torque reference Torque command
+
Tension torque bias
Load sharing gain
× +
+
[Parameter setting]
Title Function Adjustment range Default setting
H
Tension torque bias input
selection
:Disabled
:VI/II (voltage/current input)
:RR/S4 (potentiometer/voltage input)
:RX (voltage input)
:Operation panel input enabled (including
LED/LCD option input)
:2-wire RS485 input enabled
:4-wire RS485 input enabled
:Communication option input enabled
:Optional AI1 (Differential current input)
H Control panel tension torque bias ~%
H Load sharing gain selection
:Disabled
:VI/II (voltage/current input)
:RR/S4 (potentiometer/voltage input)
:RX (voltage input)
:Operation panel input enabled (including
LED/LCD option input)
:2-wire RS485 input enabled
:4-wire RS485 input enabled
:Communication option input enabled
:Optional AI1 (Differential current input)
H Control panel load sharing gain ~%
[Selection of external signals]
H , H
RR/S4-CC – 0~10V (0~250%)
RX-CC – 0~±10V (-250~250%)
VI/II-CC – 0~10V (0~250%)
VI/II-CC – 4(0)20m (0~250%)
Voltage signals
Current signals
H
RR/S4-CC – 0~10V (0~250%)
RX-CC – 0~±10V (-250~250%)
VI/II-CC – 0~10V (0~250%)
VI/II-CC – 4(0)~20mA (0~250%)
Voltage signals
Current signals
Additional torque
(fixed direction)
Reverse run
Forward run
Tension torque bias
as additional torque