Lathem LTR-512 - Manual (Page 13)

LTRx-512 Installer’s Guide
9
Wiring the Master
• Wire the display panel and power relay units for bell control and clock synchronization. Refer
to the diagrams in Appendix D for more details. Until you complete this part of the wiring,
do not turn on the AC power to P4, and keep the power/relay unit’s toggle switch
turned “OFF” (Note: The LTR4-512 does not contain Terminal Block P3)
POWER SUPPLY
TERMINAL BLOCK ‘P4’
WIRING THE LTR8-512
FOR 120VAC (nom.) OPERATION
J1 installed between 3 & 4 and J2
installed between 5 & 6
TERMINAL BLOCK ‘P4’
WIRING THE LTR8-512
FOR 220/240VAC (nom.) OPERATION
J1 installed between 4 & 5
This is terminal block P4. See the
drawings below for a closeup of wiring
for 120VAC or 220/240VAC