Outputs; Wiring Requirements And Options - Trane Tracer MP503 Installation, Operation And Maintenance Manual

Applications for the MP503

Outputs

The binary outputs are Form A single-pole, single-throw (SPST) relay outputs. These relays switch
24 Vac and are not dry contacts.
Important:

Wiring Requirements and Options

Figure 5
output.
Figure 5.
12
A pilot relay is required for any application requiring dry contacts. Relays connected
to the binary outputs on the module cannot exceed 12 VA or 0.5 A current draw at
24 Vac.
shows the wiring of each type of input on the MP503 and the wiring for a typical binary
Input/output terminal wiring for the MP503
Typical relay on/off
Typical relay on/off
N
24 Vac
H
+
–
Not
Typical 2-wire 4–
used
20 mA sensor
Typical 3-wire
0–10 Vdc sensor
Typical
binary
Typical
switching
thermistor
device
sensor
+
– GND
Typical relay on/off Typical relay on/off
Typical relay on/off
In
LonTalk 
communication link
Out
CNT-SVX09E-EN