19-6432-M-01 Rev 4 18
2.6 FMS Connection
The Model 6432e Blower provides a non-isolated 4-20 mA current
loop and relay closure output for indicating alarm status to your
process equipment or facility monitoring system (FMS). In addition
to connecting 24 VDC power to the Blower, the included terminal
block (Simco-Ion p/n 18-2308) connects the Blower to the FMS
using pins 1-5.
Figure 11. FMS and 24 VDC Pins
Table 2. FMS Output Status
24 VDC process equipment power
8 -24 VDC return (Ground)
7+24V
6 Do not use
4-20 mA current loop
5 - Current loop (Ground)
4 + Current loop
3 Open for alarm active
Relay output loop 2 Relay common
1 Closed for active alarm
Pins Normal State Alarm State No Power
Pins 1-2 (relay) Contact Open Contact Closed Contact Closed
Pins 2-3 (relay) Contact Closed Contact Open Contact Open
Pins 4-5 (Current Loop) 4mA (OK) 20 mA (Alarm) 0 mA (Brownout)
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