IMO VXSM75-1 Instruction Manual page 51

Coast-to-stop command [BX]
When the BX terminal is connected to the P24
terminal, the inverter output is immediately shut
off and the motor coasts to stop. No alarm signal
is output. This signal is not maintained.
When the operation command (FWD or REV) is
ON and the BX terminal is disconnected from
the P24 terminal, the motor starts at the starting
frequency.
Alarm reset [RST]
Upon tripping, when the connection between
the RST and P24 terminals is turned on, the
batch alarm output is removed, and when the
connection is turned off, the trip display is
removed and operation is restarted.
Trip command (External fault) [THR]
When the connection between the THR and
P24 terminals is turned off, the inverter output is
shut off (to allow the motor to coast to stop), and
an alarm [OH2] is output. This signal is
maintained internally until an RST input is
added. This function is used to protect the
external braking resistor from being overheated.
When this terminal function is not set, an ON
input is assumed.
Frequency setting 2/1 [Hz2 / Hz1]
An external digital input signal switches the
frequency setting method defined by function
codes F01 and C30.
The signal operation is changed under PID
control. (Refer to H20 through H25.)
Input signal Selected
9[Hz2/Hz1] Frequency setting
off F01 Frequency setting 1
on C30 Frequency setting 2
Motor 2/1 [M2 / M1]
An external digital input signal switches each
motor constant. However, this input is effective
only when the operation command to the
inverter is turned off and the inverter is stopped.
Therefore operation at 0 Hz is not included.
Input signal Selected motor
10[M2/M1]
off Motor 1
on Motor 2
5-22
DC brake command [DCBRK]
When the external digital input signal is ON, DC
braking starts and continues as far as the signal
remains turned on after the operation command
is turned off (or, the STOP key is pressed in the
keypad panel operation mode or both the FWD
and REV terminals are turned on or turned off in
the terminal block operation mode) and the
inverter frequency drops below the frequency
set at F20. In this case, the longer time between
the time set at function code F22 and the time
when the input signal is turned on, is given
priority.
However, operation is restarted if the operation
command is turned on.
Torque limiter 2/Torque limiter 1 [TL2 / TL1]
An external digital input signal switches
between the torque limiter values set at function
codes F40 and F41 or E16 and E17.
Input signal Selected torque limit value
12[TL2/TL1]
off F40 Torque limiter 1 (Driving)
F41 Torque limiter 1 (Braking)
on E16 Torque limiter 2 (Driving)
E17 Torque limiter 2 (Braking)
UP command [UP] / DOWN command [DOWN]
The output frequency can be increased or
decreased according to the external digital input
signal while the operation command is input
(turned on). The changing range is 0 to the
maximum output frequency and operation in a
direction opposite to that in the operation
command is impossible.
Input signal Selected function
13 14 (when operation command is ON)
off off The output frequency is maintained.
off on The output frequency increases at the
acceleration time.
on off The output frequency decreases at the
deceleration time.
on on The output frequency is maintained.
Write enable for KEYPAD [WE-KP]
This function allows program changes only
while the external signal is input; this is for the
protection of the program from inadvertent
changes.
Input signal Selected function
15[WE-KP]]
off Data change disabled
on Data change enabled
Note) If data 15 is set to a terminal
erroneously, program change become
disabled. Turn the terminal ON then
change to another number.
Selecting Functions