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192-011006N8 PSD1 Installation Guide
192-011006N8 2019-07
09.10.19 09:27
71 (109)
6.2.3.
STO principle of PSD1-M with two axis modules
At the PSD1-M drive with two axis modules, STO is activated via 2 channels for
each motor (STOA1/ and STOB1/ for motor 1 and STOA2/ and STOB2/ for motor
2).
Pin
Name
Description
X17.12
(see
page
49)
STOA1/*
Input
STOA1/ = 0 V
Motor 1 deactivated
STOB1/ = 0 V
Motor 1 deactivated
STOA1/ = 24 VDC and
STOB1/ = 24 VDC
Motor 1 released
X17.16 STOB1/*
Input
X17.14 STOGND1* Input
STO Ground.
Ground of the external 24 VDC must be connected to the
central ground connection (bottom of the device).
X21.12
(see
page
49)
STOA2/*
Input
STOA2/ = 0 V
Motor 2 deactivated
STOB2/ = 0 V
Motor 2 deactivated
STOA2/ = 24 VDC and
STOB2/ = 24 VDC
Motor 2 released
X21.16 STOB2/*
Input
X21.14 STOGND2* input
STO Ground.
Ground of the external 24 VDC must be connected to the
central ground connection (bottom of the device).
* The inputs are optically isolated.