6
Input Connections
All input and output connections are made using the connectors beneath the
access cover. Remove the two screws that secure this cover to remove the cover
and complete input and output connections as discussed below.
Universal Inputs
Inputs are configured per the model.
7001/7051 and 7003/7053
Inputs are connected to the wire terminal strip using connections I1–I3. Observe
the following guidelines. (Refer to Illustration 2 and 4.)
◆
Connect device inputs to the input terminal connections for inputs I1–I3.
◆
Connect all grounds to the common GND reference terminals.
◆
If input pull-ups are required, refer to “Board Configuration” later in this
section.
Note:
Input #1 (I1) is typically assigned to the space temperature sensor input, other-
wise it is available for use. Inputs 2 and 3 are available for optional inputs.
7002/7052
These inputs are the same as on the 7001/7003 series except for Input #3 (I3). The
I3 input on these models is dedicated to the TSP Slave Flow Sensor input. (Refer
to Illustration 3.)
RS-485 Inputs
To make connections to a KMC Tier 2 (RS-485) network use the RS-485 connec-
tions on the terminal strip. If the Controller is at the End-of-Line, refer to “Con-
figuration” after connections are completed.
Detail
The End-of-Line connection will have only one wire attached to the A and B
terminals.
◆
For reliable operation, use Belden cable model #82760 or equivalent (18 gauge,
twisted, shielded, 50 picofarads or less) for all network terminal block connec-
tions.
◆
Connect the nodes of the network in a daisy-chain arrangement. This means:
Connect the
A
terminal in parallel with all other
A
terminals.
Connect the
B
terminal in parallel with all other
B
terminals.
◆
Connect the shields of the cable together at each controller.
◆
Connect the shield drain wire to an earth ground only at one end of the
segment; tape back the shield ground at the other end.
Installation
KMD-7001/7002/7003 Direct Digital Controller Installation & Operation Guide
