FLX Series

The FLX-PS24 power supply module is designed to deliver reliable and consistent output power to the Field Level expansion I/O modules.  The FLX-PS24 can be used to extend the distance between the remote mounting of FLX I/O modules and Cylon’s CBX or CBXi BACnet® field controllers.  The power supply module can also be used to power field devices that require DC power when connected to the CBX and CBXi controllers. 

The FLX-PS24 carries power and inter-module communications from the CBX or CBXi to the FLX bus to enable the connection of additional FLX modules, allowing the CBXi to be expanded to 96 I/O points. It can also be used to facilitate remote locating of FLX modules in a CBX or CBXi System, providing local grounding.  The power supply module can deliver power for loads up to 20 W.  The consumption of downstream FLX modules and field devices can vary.  The Power Consumption table can be used to calculate the consumption of the FLX I/O modules.

The power supply module facilitates flexible mounting of the CBX/CBXi and its associated FLX modules either in a single row or multiple rows using the FLX-RMC Remote Module Connector

PDF Datasheet


  • FLX-PS24 allows the CBXi trunk to be expanded beyond 64 I/O points to a maximum of 96 I/O points:

CBXi with 5 modules and PS24 updated

  • FLX-PS24 facilitates remote connection of FLX modules to CBX or CBXi to a maximum overall length of 1200 m (3280 ft). Each FLX-PS24 can power a bus segment of up to 30 m (100 ft):
  • The FLX-PS24 can provide 20 V DC DIN rail-mounted power supply for external field devices using the FLX-RMC
  • The number of FLX modules that can be powered by a FLX-PS24 depends on the model and loading of the individual FLX modules. Any combination where the total full-load power is less than 20 W can be used.


Size (excluding terminal plugs); 104 x 89.5 x 57 mm [4.1 x 3.55 x 2.25”]
Enclosure Flame-Retardant ABS
DIN 43880 type-2 compatible
Mounting DIN rail
Terminals PCB mounted plug terminal connections
Conductor Area Max: AWG 12 (3.31 mm2)
Min: AWG 22 (0.355 mm2)
Supply Requirements 24 V AC/DC ±20% 50/60 Hz
Supply Rating 50 VA
Output 20 V DC @ 1 A (20 W)
FLX Power Connection FLX bus connector provides power to connected FLX modules, while passing through FLX bus communications between left and right connectors.
FLX bus Connection FLX bus connector carries inter-module communications
Ambient Temperature -25°C ...50°C (-13°F...122°F)
Ambient Humidity 0%...90% RH non-condensing
Storage Temperature -30°C ...+70°C (-22°F...158°F)
EMC Immunity EN 61326-1:2013
EMC Emission EN 61326-1:2013
EN 61000-3-2: 2014
Approvals UL Listed (CDN & US) UL916 Energy Management Equipment - File No. E176435
Safety CE Approved
(724) 733-2000
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