AZ
2
USER MANUAL
ST.TEC.003.EN Rev. 2.1
30 / 52
The meanings of the acronyms is:
Label
Function
OPEN
Open / forward command
CLOSE
Close / backward command
TRIM-1
Motor 1 trimming mode enable
TRIM-2
Motor 2 trimming mode enable
OP-SW
Open limit switch
CL-SW
Close limit switch
INT-SW
Intermediate switch
STOP
Stop command (errors reset)
Table 19: legend of external devices in synchronous operating mode
Refer to 4.1 for the setting parameters of inputs from 01 to 08.
6.2.
Trimming mode
The user can drive the motors independently using the trimming function during the assembly or for
resetting the correct mechanical setup in fault cases.
The trimming commands are only hold-to-run:
motor 1: press and hold TRIM-1 and use OPEN and CLOSE to move the actuator forward or
backward;
motor 2: press and hold TRIM-1 and use OPEN and CLOSE to move the actuator forward or
backward.
The drive sets on the two motors the same voltage profiles reported in 4.2.
No limits work when the motor moves in trimming mode, not mechanical limit switches neither
electronic ones. The motor can stop only for overcurrent, command release or STOP command as
described in paragraph 4.2.
The user must run the homing procedure, described below, to restore the normal functioning of the
drive after every movement in trimming mode.
6.3.
Homing function
At the first start, after the mechanical assembly and first alignment, the user must execute a homing
procedure so that the drive can detect the encoder connections and initialize the position counters.
It is recommended to give the homing command so that each motor can run at least 3 seconds before
reaching the home position otherwise the drive will fail in the detection of encoder’s connections
and will pass in block state (see 7.2). This detection is done only during the first homing execution,
so do not change encoder’s connections afterwards!
The drive will move both motors applying on them the homing ramp when both commands TRIM-1
and TRIM-2 are high for more than 3 seconds. Depending on the parameters (see Table 20), the user
can choose between three homing types:
limit switch homing: the home position is achieved when the limit switch is pressed and both
motors are stopped reducing the voltage until 0 V, in
S106
ms; if any motor current exceeds
the limit, the drive stops both motors and pass in block state;
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