Amada IS-300CA - Page 107

APPENDIX B. ELECTRICAL AND DATA CONNECTIONS
IS-300CA INVERTER POWER SUPPLY
990-418 B-3
RS-485 (optional): two DB-9 (female) connector wired as follows:
RS-485 allows multiple Power Supplies to be daisy chained to a host.
TRANSFORMER SENSING CONNECTOR OF SENSE CABLE TO IT
TRANSFORMER
PIN DESCRIPTION
A Common (Thermostat)
B Thermostat
C Voltage
D Current
E Current
F Voltage
G Ground
FRONT VIEW
#1 – Not Used
#2 -- Not Used
#3 -- Not Used
#4 -- Tx+
#5 -- Tx-
#6 -- Not Used
#7 -- Not Used
#8 -- Rx+
#9 -- Rx-
#6 -- Not Used
#7 -- Not Used
#8 -- Rx+
#9 -- Rx-