Johnson Controls FX-PCX3731 Installation Instructions Manual Download Page 2

Do not mount the controller on surfaces prone to
vibration, such as duct work.

Do not mount the controller in areas where
electromagnetic emissions from other devices or
wiring can interfere with controller communication.

Observe these additional guidelines when mounting a
controller in a panel or enclosure:

Mount the controller so that the enclosure walls do
not obstruct cover removal or ventilation through the
controller.

Mount the controller so that the power transformer
and other devices do not radiate excessive heat to
the controller.

Do not install the controller in an airtight enclosure.

Figure 1: Controller Mounting Positions

DIN Rail Mount Applications

Mounting the controller horizontal on 35 mm DIN rail is
the preferred mounting method.

To mount an FX-PCX controller on 35 mm DIN rail:

1. Securely mount a 20 cm (8 in.) or longer section of

35 mm DIN rail horizontal and centered in the desired
space so that the controller mounts in the horizontal
position shown in

Figure 1

.

2. Pull the bottom mounting clips outward from the

controller to the extended position as shown in

Figure

2

.

3. Hang the controller on the DIN rail by the hooks at

the top of the (DIN rail) channel on the back of the
controller (

Figure 2

), and position the controller snugly

against the DIN rail.

4. Push the bottom mounting clip inward (up) to secure

the controller on the DIN rail.

To remove the controller from the DIN rail, pull the
bottom mounting clip out to the extended position and
carefully lift the controller off the DIN rail.

Wall Mount Applications

To mount an FX-PCX controller directly on a wall or other
flat vertical surface:

1. Pull the two bottom mounting clips outward and

ensure they are locked in the extended position as
shown in

Figure 2

.

2. Mark the three mounting hole locations on the wall

using the dimensions in

Figure 2

and one of the mount

positions shown in

Figure 1

Or, hold the controller

up to the wall or surface in a proper mount position
and mark the hole locations through the mounting
clips.

3. Drill holes in the wall or surface and insert appropriate

wall anchors in all of the mounting holes (if
necessary).

4. Hold the controller in place, and insert the screws

through the mounting clips and into the holes (or
anchors). Carefully tighten all of the screws.

Important:

Do not overtighten the mounting screws.
Overtightening the screws may damage
the mounting clips.

Figure 2: Back of Controller Showing Extended

Mounting Clips, DIN Rail Channel, and Mounting

Dimensions, mm (in.)

2

FX-PCX3731 Input/Output Module Installation Instructions

Summary of Contents for FX-PCX3731

Page 1: ...alled and used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area may cause harmful interference in whic...

Page 2: ...rail channel on the back of the controller Figure 2 and position the controller snugly against the DIN rail 4 Push the bottom mounting clip inward up to secure the controller on the DIN rail To remove...

Page 3: ...resses 3 24 VAC Class 2 Supply Power Terminal Block See Supply Power Terminal Block 4 Cover Lift Tab One of Two See Removing the Controller Cover 5 Sensor Actuator SA Bus or Field Controller FC Bus Te...

Page 4: ...regulations Important Electrostatic discharge can damage controller components Use proper electrostatic discharge precautions during installation setup and servicing to avoid damaging the controller...

Page 5: ...e Table 5 for more information The SA FC bus port pin assignment is shown in Figure 6 Figure 6 Pin Number Assignments for Sensor SA Bus and FC Bus Ports on Controllers Supply Power Terminal Block The...

Page 6: ...ront of the controller 2 Ensure that the controller s device address DIP switches are set to the correct device address See Setting the Device Addresses 3 Set DIP switch 128 to ON which enables wirele...

Page 7: ...the wiring guidelines in Table 3 observe these guidelines when wiring controller inputs and outputs Run all low voltage wiring and cables separate from high voltage wiring All input and output cables...

Page 8: ...External Power Source Requirements 30 VAC maximum output voltage 0 5 A maximum output current 1 3 A at 25 duty cycle 40 mA minimum load current OUTn BINARY OUPUT External Power Source Only Binary Outp...

Page 9: ...isted wire 0 6 mm 22 AWG stranded copper 107 m 350 ft twisted wire N A 24 AWG stranded copper 100 mV maximum voltage drop Depending on cable and the connected input or output device you may have to de...

Page 10: ...ines for wire sizes cable types and cable lengths when wiring the controller communication buses and supply power In addition to the guidelines in Table 5 observe these guidelines when wiring an SA or...

Page 11: ...d FC Bus wiring recommendations in this table are for MS TP bus communications at 38 400 baud For more information refer to the FX PC Series Controller MS TP Communications Bus Technical Bulletin LIT...

Page 12: ...PC Series Controllers MS TP Communications Bus Technical Bulletin LIT 12011670 for more information on controller device addresses and how to set them on MS TP buses Table 6 SA FC Bus Device Address D...

Page 13: ...ctrique Important Do not connect an external power source to a BO when the BO power source jumper is in the internal power INT position Connecting external power to a BO that sources internal power ca...

Page 14: ...OWER Off Steady No Faults On Steady Device Fault no application loaded Main Code download required if controller is in Boot mode or a firmware mismatch exists between the controller and the FX ZFR1811...

Page 15: ...5 to 95 RH noncondensing Ambient Conditions DIP switch set valid controller device addresses 4 127 Device addresses 0 3 and 128 255 are reserved and not valid addresses Addressing BACnet MS TP RS 485...

Page 16: ...ternational BACnet Testing Laboratories BTL Protocol Revision 4 Listed BACnet Application Specific Controller B ASC The performance specifications are nominal and conform to acceptable industry standa...

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