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2021-11-16
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SMART T-Connector with DCD
SEU-1/0-T45 Series
1. Connect the female 4-pin M12/Euro-Style cable to the male 4-pin M12/Euro-Style of the series connection T-Adapter
(ATS-M12/4-M12/8).
2. Connect your reset device.
• If you are using a manual reset model of emergency stop device—Connect the female 8-pin M12/Euro-Style of the
reset T-Adapter (ATD-M12/8-M12/4) to the male 8-pin M12/Euro-Style connector of the series connection T-Adapter.
• If you are using a reset switch—Connect a female 4-pin M12/Euro-Style cable to the male 4-pin M12/Euro-Style QD of
the reset T-Adapter.
3. Connect the SEU-2 / -3 / -4 to the male 8-pin M12 connector of the T-Adapter. Use the S1W-M12A8/BW... extension cables
as needed.
4. Connect the male 4-pin M12 end of a double-ended cable to the female 4-pin M12 of the T-Adapter. Connect the female
end of the double ended cable to the next series connection T-Adapter (ATS-M12/4-M12/8) or the SEU-1/0-T45-....
5. At the end of the line, install a terminating plug (AEP-M12/4) to properly truncate the system.
6. Wire the wired end of the 4-pin M12 cable (from step 1) directly to a Safety Monitoring Device, such as a DCD-enabled
BERNSTEIN Safety Controller model SCR P or SCR DI. You may also wire the 4-pin M12 cable to an Daisy Chain diagnostic
(DCD) module then to the Safety Monitoring device.
7. Verify that the DCD chain of devices and the safety monitoring device are powered from the same power supply or the
commons of the separate supplies are the same. Ensure that the voltage level at the DCD enabled device in position #1
(furthest from the power supply) is above 19.5 V for the system to operate properly.
2.5.1 Wire the SEU-1/0-T45-... in a Chain of DCD E-Stops
When connecting emergency stop units in series, simplify the wiring by using special T-Adapters, low cost unshielded
four-wire double-ended cables, and the SEU-1/0-T45-... with indication.
A configuration of three lighted DCD E-Stops and a panel mount E-Stop is shown. The SEU-3... and SEU-4... E-stops and
the SEU-1/0-T45-... can be combined in a single chain.
Figure 3. Wiring the SEU-1/0-T45-... in a chain of DCD e-stops
SEU-1/0-T45-C with
SFW-M12C4/AW…
SEU-1/0-T45-AB with
SFW-M12B5/AW...
Pin 1 CH1a
Brown
CH1a
Brown
Pin 2 CH1b
White
CH1b
White
Pin 3 CH2a
Blue
NC
Blue
Pin 4 CH2b
Black
CH2a
Black
Pin 5 NC
-
CH2b
Grey
(see table below)
