12
STRAC2 Hardware Manual
920-0118 Rev B
03/26/21
4.2 Running Current
The output current is set by the
SW5, SW6 and SW7
switches. There are 8 settings.
NOTE: Drive’s running current will be limited by the lower value between motor selection rotary
switch or the dip current switch
Current (Peak)
SW5
SW6
SW7
0.6A
ON
ON
ON
0.8A
OFF
ON
ON
1.0A
ON
OFF
ON
1.2A
OFF
OFF
ON
1.6A
ON
ON
OFF
1.8A
OFF
ON
OFF
2.0A
ON
OFF
OFF
2.5A
OFF
OFF
OFF
4.3 Idle Current
The running current of the STRAC2 drive is automatically reduced whenever the motor isn’t moving. The
SW8
switches control the
percentage of the running current the idle current is reduced to. The 90% setting is useful when a high holding torque is required. To
minimize motor and drive heating it is highly recommended that the idle current reduction feature be set as low as the application can
tolerate.
Idle
SW8
50%
ON
90%
OFF
4.4 Step Input Signal Filter
STRAC2 Drive selects the digital signal filter frequency by
SW9
. Setting switch to “OFF” will select high frequency 2MHz, and setting
switch to “ON” will select low frequency 150 KHz.
Note: The power must be cycled each time the position of SW9 is changed.
4.5 Anti Resonance
The
SW10
switches select the load inertia. There are 2 settings. The inertia selection can help the STRAC2 drive to calculate the
current control parameter. If the load inertia is close to that of the motor rotor, the low setting should be selected. If the load inertia is
higher than that of the rotor, a proportionally higher setting should be selected.
Option
SW10
Inertia
0
ON
Low
High
1
OFF
SW5
SW6
SW7
5 6 7
5 6 7 8
5 6 7 8
5 6 7 8
5 6 7 8
5 6 7 8
5 6 7 8
5 6 7 8
5 6 7 8
0.6A
0.8A
1.0A
1.2A
1.6A
1.8A
2.0A
2.5A
