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Rockwell Automation Publication 20P-TG004C-EN-P - September 2021
125
Circuit Board Layouts and Connections
Appendix B
Table 16 - Pulse Transformer Board to Field Board Connections
Table 17 - Pulse Transformer Board to Switching Power Supply Connections
Table 18 - Pulse Transformer Board to Bimetal Thermostat Connections
Table 19 - Pulse Transformer Board to Field SCR/Dual Diode Module Connections
Pulse
Transformer
Board Connector
Pin Number
to Pin Number
Field Board
Connector
Description
X3
1
…
1
X3
1U1 field sync signal (from U1)
2
…
2
1V1field sync signal (from V1)
Pulse Transformer
Board Point
to Pin Number
Switching Power Supply Board
Connector
Description
1C2
…
4
XUV
Rectified U2-V2 voltage (approx.
150/300V DC)
…
3
not used
1D2
…
2
not used
…
1
Common
Pulse
Transformer
Board Connector
Pin Number
to Pin Number
Bimetal
Thermostat
Connector
Description
X4
1
…
1
X4
+24V supply through resistor
2
…
2
24V common
Pulse
Transformer
Board Connector
Pin Number
to Pin Number
Field SCR/Dual
Diode Module
Connector
Description
XP
1
…
3
Fastons
Gate signal G1
2
…
2
Common cathode (K1 and K2) for
both field SCRs
3
…
2
4
…
1
Gate signal G2