Accelnet & Stepnet Plus Panels User Guide
16-01339 Rev 07
S
AFE
T
ORQUE
O
FF
M
UTING
(B
YPASSING
)
If an application does not require the STO feature, then is can be
muted
or bypassed by energizing the STO
inputs with a power source that is in the
Plus Panel
drive. And, when the STO feature is not used, these
connections must be made in order for the
Accelnet & Stepnet
Plus Panels
to be enabled by software or
hardware means.
The diagram below shows the STO bypass connections that will energize both STO-IN1 and STO-IN2 opto-
couplers. When this is done the STO feature is de-activated and control of the output PWM stage is under
control of the digital control core.
The connections shown can be made with four jumpers. When wired as shown it is not necessary to crimp two
wires into a single contact.
* STO bypass connections on the Plus Panel drives and Xenus Plus XEL/XPL models are different. If both
drives are installed in the same cabinet, the diode should be wired as shown to prevent damage that could
occur if the STO bypass connectors are installed on the wrong drive. The diode is not required for STO bypass
on the Plus Panel drives and can be replaced by a wire between pins 7 and 9.
Jumper Wiring, no diode:
2-4, 3-5, 6-8, 7-9
Jumper Wiring, with diode:
2-4, 3-5, 6-8, 7-anode, 9-cathode