F-24853-4
©
Copyright 2006 TAC All Rights Reserved.
3
Programming information is contained in this document. For
further details regarding software configuration, please refer
to the appropriate User’s Guide and the TAC MicroSmart
Operator Interface User’s Guide.
Included in This Package
The MPC-8AI is supplied with:
1. One N1-1092 MPC-8AI module circuit board.
2. Two 8-pin connectors (green, N100-410659), for
connection to analog inputs AI1-AI8.
Other Components
The MPC-8AI requires direct connection to a TAC MicroSmart
MSC-MPC Multi-purpose controller.
Options and Accessories
TS-5800 and TS-58000 series platinum RTD room
thermostats and remote sensors, and TS-8100 and TS-81000
series Balco sensors. See separate platinum RTD room
sensor data sheet for special models using RJ-11 jacks,
adjustable setpoints, and pushbutton/LED overrides.
Power Requirements
The MPC-8AI is powered on when connected to a functional
MSC-MPC. No additional power is required.
Caution:
Disconnect power supply from associated MSC-
MPC controller before installing MPC-8AI to prevent electrical
shock and equipment.
More than one disconnect switch may be required to de-
energize this equipment before servicing.
Do not attempt to power the unit ON until installation is
complete.
Installation
The MPC-8AI is a module that fits into any of the four option
slots on the MSC-MPC. To install, remove power from the
MSC-MPC and insert the MPC-8AI into the desired option slot
on the MSC-MPC. Wiring instructions, diagrams, and
software assignments are provided below.
Note: When installing the MPC-8AI, be sure that the
controller is fully seated to the backplate before and after the
backplate is fastened to the enclosure.
Sensor Grounding
The shield wire for the room sensor should be grounded to
chassis where the wire enters the enclosure. This ensures
maximum protection from electrical noise and electrostatic
discharge.
Wiring Instructions and Setup Information
Temperature Sensing Inputs
The MPC-8AI allows two types of analog inputs for the
purpose of temperature sensing. They are:
– 1000 ohm platinum RTDs (-40 to +240 °F)
– 1000 ohm Balco RTDs (-30 to +240 °F)
Note: T99 Series temperature sensors cannot be used with
the MPC-8AI module.
Platinum RTD Inputs
The inputs provided for these sensors are terminals AI1 A&B
through AI8 A&B. The inputs are two-wire, twisted pair with
shield.
Inputs are not polarized, terminate one of the wires to terminal
A and the other wire to terminal B. Terminate the shield to
cabinet ground closest to the entry point of the wire into the
enclosure (cut off all additional wire). Cut and tape the shield
at the sensor end to prevent it from coming in contact with
junction box or other conductors. Refer below for wiring and
setup information.
Figure-2 Platinum RTD or Balco Resistance Temperature
Sensor.
Table-1 illustrates the numbering scheme and software
assignments of the platinum RTD inputs. When making these
assignments, the first entry is the option slot number on the
connected MSC-MPC controller and the second entry is the
number of the analog input being using.
For example, when plugged into option slot number 2, analog
input number 1 has an assignment of AI 21.
