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2.10. Safe Torque Off Input (STO)
The STO circuit is comprised of two identical channels, each of which must be energized in order for the
XR3 to produce motion. Each channel is opto-isolated and provides individual connections to each
terminal of the opto-coupler LED. Current limiting resistors are provided internally and the STO inputs
are designed to work with 24 V signals.
IMPORTANT
: The XR3 might be equipped with an STO bypass plug. The bypass plug
defeats the STO safety circuit and allows the system to run at all times. To use the STO
safety functionality, remove the plug and make connections as outlined in this section.
IMPORTANT
: The application circuit and its suitability for the desired safety level is the
sole responsibility of the user of the XR3.
WARNING
: STO wires must be insulated to prevent short circuits between connector pins.
The primary concern is a short circuit between STO 1+ and STO 2+ wire strands or solder
bridges.
Table 2-48:
STO Connector Pinout
Pin # Signal
Description
In/Out/Bi
Connector
1
STO 1+
STO Channel 1 Positive Input
Input
2
STO 2+
STO Channel 2 Positive Input
Input
3
Reserved
Reserved
N/A
4
Power
Used to defeat STO by connecting to STO
1+ and STO 2+
N/A
5
Reserved
Reserved
N/A
6
STO 1-
STO Channel 1 Negative Input
Input
7
STO 2-
STO Channel 2 Negative Input
Input
8
Reserved
Reserved
N/A
9
Power Supply -
Used to defeat STO by connecting to STO 1-
and STO 2-
N/A
Table 2-49:
Mating Connector Part Numbers for the STO Connector
Mating Connector
Aerotech P/N
Third Party P/N
9-Pin D-Connector
ECK00137
Cinch DE-9P
Backshell
ECK01021
Amphenol 17E-1724-2
2.10. Safe Torque Off Input (STO)
XR3 Hardware Manual
78
www.aerotech.com
Содержание Automation1 XR3 Series
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Страница 66: ...Figure 2 33 Digital Input Schematic 2 7 DIN Connector Digital Inputs XR3 Hardware Manual 66 www aerotech com...
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