Engineering Documentation

Chapter 4 – Equipment Controllers
BACnet Programmable Terminal Equipment Controllers (PTEC) and N-Variant P1 TEC (Updated Hardware)
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BACnet Programmable Terminal Equipment
Controllers (PTEC) and N-Variant P1 TEC
(Updated Hardware)
Earth Ground Reference
The earth ground reference for all field panels and equipment controllers must be
supplied via a third wire run, with the AC power source providing power to that
cabinet. All AC power sources must be bonded per NEC 250 unless isolation is
provided between the cabinets.
For more information, see the Equipment Grounding System Requirements [➙ 17]
section of this manual.
BACnet PTEC or N-Variant P1 TEC (Updated Hardware) Power Source Requirements.
Product Input Voltage Line Frequency Maximum Power
1) 2) 3) 4)
BACnet Equipment Controller
(6 DO Platform)
24 Vac 50/60 Hz 3 VA + DO loads
BACnet Equipment Controller
(8 DO Platform)
24 Vac 50/60 Hz 7 VA + DO loads
1)
Total VA rating is dependent upon the controlled DO loads (for example, actuators, contactors, and so on) and is limited
to 12 VA per DO.
2)
Smoke control listed ATECs are limited to 6 VA maximum per DO.
3)
Do not control more than the nameplate rated loads for DOs of the electronic output controllers. The controller UL and
CSA listing is based on the nameplate power rating.
4)
For higher VA requirements, 110 or 220 Vac requirements, separate transformers used to power the load, or DC power
requirements, use an interposing 220V 4-relay module (TEC Relay Module P/N 540-147).
NOTE:
See the Installation Instructions for point wiring diagrams.