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General Wiring Information
The ac power connections are in the top left corner of the MP501 as shown in
.
Figure 3.
Connecting ac power wires to the controller
BIN
1
24V
GND 24V
AC POWER
H
N
24 Vac
transformer
Use a UL-listed Class 2 power transformer supplying a nominal 24 Vac (21–27 Vac). The
transformer must be sized to provide adequate power to the MP501 (10 VA) and output devices,
including relays and actuators (a maximum of 60 VA for outputs). The MP501 may be powered by
an existing transformer integral to the controlled equipment, provided the transformer has
adequate power available and adequate grounding is observed.
Communication Link Wiring and Addressing
The MP501 communicates with the BAS and with other controllers via a LonTalk communication
link.
Important:
For critical instructions about network wiring, refer to the Tracer Summit™ Hardware
and Software Installation Guide (BMTW-SVN01).
Wiring for the communication link must meet the following requirements:
•
All wiring must comply with the National Electrical Code and local codes.
•
22 AWG Level 4 un-shielded communications wire recommended for most Comm5
installations.
•
Termination resistors are required for wiring LonTalk devices communicating on a network. For
important instructions on using termination resistors for LonTalk applications, refer to the
latest version of the Tracer Summit Hardware and Software Installation guide.
Each MP501 has a unique 12-character alphanumeric device address for communicating on a BAS
network. This address, referred to as a Neuron ID, is assigned in the factory before the product is
shipped. Each controller can be identified by viewing its unique Neuron ID, which is on a printed
label attached to the circuit board of the controller. Additional adhesive-backed, peel-off Neuron
ID labels are tethered to the controller for placing on mechanical prints or unit location worksheets.
The Neuron ID will appear when communication is established with a service tool (such as the
Rover service tool) or a BAS. An example Neuron ID is 00-01-64-1C-2B-00.
