Installation 2-7
MN1269
Figure 2-5 Optional Input Signal Wiring
Interlock (Pin 10)
The interlock is bidirectional. That is, it can be pulled to common internally to disable the
output stage of the control or externally to accomplish the same disabling function (see
Figure 2–5). The internal pull down function occurs as a result of:
High bus or low bias voltage. (VE Indicator ON)
Ground Fault current. (GF Indicator ON)
Excessive I
2
T current or overtemperature (in latch mode). (EC indicator ON)
Excessive bus surge current. (SC Indicator ON)
The interlock function can be used to tie multiple servo control cards together thus locking
all cards together. If wired in this configuration and a fault condition occurs on one axis
card, all other cards will also be interrupted. An Emergency E–stop could also be wired
to the interlock line, upon switch closure the output stages of all servo control cards will
be disabled (i.e., motors will coast to a stop with no holding torque). See Section 5 for
additional information on Emergency Stop.
Reset (Pin 15)
The reset line is used to externally reset the servo control. When the reset signal is tied
to common temporarily and then released, the control will be enabled (restarted) if a fault
condition is not present. If activated, the reset line will totally disable the servo control
card. The reset button (SW1) (a momentary switch) was added for your convenience and
will provide the same results.
+15 VDC/–15 VDC (Pins 12 & 13)
This is an available logic power source with a 50 mA maximum load which can be used to
support external devices or can be used with a voltage divider network to provide the
signal input to the servo control card.
Servo Systems Co. • 115 Main Road • P.O. Box 97 • Montville, NJ, 07045-0097
(973) 335-1007 • Toll Free: (800) 922-1103 • Fax: (973) 335-1661
www.servosystems.com
