SI-RFA-TS
4-pin male connection
SI-RFA-TK
SI-RFA-P Termination
MQDEC-4xxSS (3) and DEE2R-8xxD (1)
MQDC-4xx (2)
ONLY FOR E-Stop 4
Power
Safety
Monitoring
Module
24Vdc 0Vdc
OSSDs
Bn
Bu
Wh
Bk
Bn
Wh
Reset
1
2
3
4
Component Key
8-pin female connection
SI-RFA-TS
SI-RFA-P
SI-RFA-TS
SI-RFA-TS
SI-RFA-TS
DEE2R-8xxD
SI-RFA-TK
MQDEC-4xxSS
MQDEC-4xxSS
MQDEC-4xxSS
MQDC-4xx
MQDC-4xx
24Vdc
0Vdc
Figure 8. SSA-EB1PLx-0Dx E-Stops with ISD Series Connection
In a long series or series with many ISD devices, the voltage at all devices must stay above 19.5 V for proper operation.
An additional power supply may be required to maintain a minimum of 19.5 V at all devices. For examples of how to
properly connect a second power supply, refer to
For guidance on maximum total cable length and maximum number of devices before an additional power supply may be
needed, refer to
on p. 10. For using ISD information to monitor the individual device voltages, see
There are two options to connect an additional power supply.
1
8
SI-RFA-TS
SI-RFA-TS
SI-RFA-TS
SI-RFA-TS
SI-RFA-TS
SI-RFA-TS
Power
#2
24Vdc 0Vdc
Bn
Bu
Safety
Monitoring
Module
24Vdc 0Vdc
OSSDs
Bn
Bu
Wh
Bk
24Vdc
0Vdc
Power
#1
SI-RFA-TK
SI-RFA-P
MQDEC-4xxSS
Figure 9. Option 1: Use a SI-RFA-TK Reset Connector in series with ISD Device. If available, set the power supplies for parallel output.
1
8
SI-RFA-TS
SI-RFA-TS
SI-RFA-TS
SI-RFA-TS
SI-RFA-TS
SI-RFA-TS
Safety
Monitoring
Module
24Vdc 0Vdc
OSSDs
Bn
Bu
Wh
Bk
24Vdc
0Vdc
Power
#1
Connect OSSD1 and
OSSD2 to +24 V dc
MQDEC-4xxSS
Power
#2
24Vdc
0Vdc
Bn
Bu
DEER2-8xxD
Figure 10. Option 2: Replace the terminator with a power supply. The OSSD1 and OSSD2 wires at power supply #2 must be connected to +24 V DC. If
available, set the power supplies for parallel output.
SSA-EB1PLx-0Dx Series Lighted Emergency Stop Button with ISD
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9