System 350 A350E Electronic Cooling Control Product/Technical Bulletin
5
Sensor Connection
Shielded cable is not generally required for sensor
wiring on runs of less than 50 ft (15.2 m), but is
recommended for lengths greater than 50 ft (15.2 m).
Connect the shield to the COM sensor terminal on the
A350E. (See Figure 2 for terminal location.) Sensor
A99BA-200, which includes a shielded cable, is
available if needed.
Note:
At the maximum cable lengths listed in
Table 2, no more than 1F° (0.6C°) error in the
sensed temperature will result due to wire
resistance.
Table 2: Recommended Maximum Sensor
Cable Lengths
Wire
Shielded Cable Length
*
Gauge
Feet
Meters
14 AWG
800
244
16 AWG
500
152
18 AWG
310
94
20 AWG
200
61
22 AWG
124
38
* Values provided are for 2-wire stranded cable.
●
A variety of A99B Series Temperature Sensors
and mounting hardware are available for use with
the A350E. Connect the sensor to the SEN
terminal and one of the COM terminals on the
four position terminal strip located at the top left of
the printed circuit board, as shown in Figure 6. The
sensor is not polarity sensitive.
●
The sensor must be mounted so that it can
accurately sense the temperature of the controlled
medium.
Table 3: Sensor Included With A350E
Controls
Control
Sensor Included
A350EA-4C
A99BB-25C; Range -40 to 212°F
(-40 to 100°C)
Lead length is 9-3/4 in. (0.25 m).
A350EB-1C
No Sensor Included
A350EB-1D
No Sensor Included
A350EB-2C
No Sensor Included
●
For more information regarding sensor options and
installation, refer to the
A99B Series Temperature
Sensors Product/Technical Bulletin (LIT-125186).
Load
Load
Load
Load
Shield (Connect
to COM on A350E.)
Sensor
A350E
Y350R
S350A
D350
S350A
S350A
120 VAC
24V
COM
COM
SEN
NC
COM NO
Figure 6: Typical Wiring Diagram for an A350E Powered by a
Y350R Power Module
