Incorrect wiring or incorrect voltage application to the output circuits may
cause short-circuit failures.
If a short-circuit failure occurs as a result of any of these causes, the
holding brake will not work. This could damage the machine or cause an
accident that may result in death or injury.
n Photocoupler Output Circuits
Photocoupler output circuits are used for the ALM (Servo Alarm), /S-RDY (Servo Ready),
and other sequence output signals. Connect a photocoupler output circuit to a relay or
line-receiver circuit.
Example for Relay Circuit Example for Line-Receiver Circuit
0 V
Relay
5 VDC to 30 VDC
SERVOPACK
SERVOPACK
5 VDC to 30 VDC
0 V
The maximum allowable voltage and current range for photocoupler
output circuits are as follows:
– Maximum allowable voltage: 30 VDC
– Current range: 5 mA to 50 mA DC
n Line-Driver Output Circuits
This section describes CN1 connector terminals 17-18 (Phase-A Signal), 19-20 (Phase-B
Signal), and 21-22 (Phase-C Signal).
The serial data from the encoder is converted to two-phase (phases A and B) pulses. The
resulting output signals (PAO, /PAO and PBO, /PBO) and origin pulse signal (PCO and /
PCO) are output with line-driver output circuits. Connect the line-driver output circuits to
line-receiver circuits at the host controller.
Example for Line-Receiver Circuit
Applicable line receiver:
SN75ALS175 or MC3486
manufactured by Texas Instruments
or the equivalent
Output line driver:
SN75ALS174 or
the equivalent
Host controller
SERVOPACK
220 W to
470 W
SGSG
Sequence Output Circuits
Sigma-7 Series SERVOPACKs
Wiring and Connecting SERVOPACKs
Connecting I/O Signals > I/O Circuits
| | PROFINET Communications - SIEP YEUOC7P 02A Revision 0 | en | 123
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