Kollmorgen Troubleshooting
SERVO
STAR
®
SP3 Power Block
25
OVER-CURRENT SHUT-DOWN
DIP switches 1 and 4 enable or disable the over-current shut-down (fault display “t1”). The SP3
does not generate the current command, so the SP3 has no way of limiting the current besides a
full shut-down. An over-current fault is generated if peak current is drawn for 1 second, or if 2/3
peak current is drawn for 2 seconds.
Switch 1
Switch 4
Description
Open Open
Disabled
Closed
Closed
Enabled (factory default)
Open Closed
Enabled
Closed Open
Enabled
CURRENT SCALING
The SP3 measures the current of the drive and makes the value available to the user via a ±10-
volt signal. The currents measured from the power board of the drive are IAA and ICC , but those
signals are not available to the user. The voltage is scaled such that 10 Volts is equivalent to
125% of the peak current. The peak current value is based on the SP3 model, and the voltage is
scaled accordingly, as shown below.
SP Model
Continuous Current
(Amps RMS)
Peak Current
(Amps RMS)
Value at 10V
(Amps RMS)
CP3 03 xx
3
9
11.25
CP3 06 xx
6
18
22.5
CP3 10 xx
10
20
25.0
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