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PEAK® OEM 18 240 Volt SMART Equipment Controller Installation Instructions
9
The Sensor port is connected internally to the SA bus terminal block. See Table 5 for more information. The Sensor
Port pin assignment is shown in Figure 9
.
Modbus Terminal Block
The Modbus terminal block is a green, removable, 3-terminal plug that fits into a board-mounted jack.
Wire the removable Modbus terminal block plugs on the controller, and other field controllers in a daisy-chain
configuration using 3-wire twisted, shielded cable as shown in Figure 10. See Table 5 for more information.
The Modbus port communicates as a Master Modbus device and connects to the Modbus network, which may
consist of one-to-many slave Modbus devices. Each Modbus slave device has a unique Modbus Register table and
must be configured within the application of the PEAK controller. The configuration and application of Modbus is
identified by the PEAK support team and programmed based on OEM applications.
Figure 10: Modbus Terminal Block
Supply Power Terminal Block
The 120/240 VAC supply power terminal block input is a 3-pin terminal lug located on the top right of the controller.
Wire the 120/240 VAC Universal supply power wires to the HOT, Neutral, and Functional Earth (noted as L, N, and
)
for more information about the Supply Terminal Block.
Cable Shield
Connection
To Next
Device on
the Modbus
Segment
F
IG
:md
_
b
u
s_
te
rms
Modbus
Terminal
Block Plugs
Terminating Device
on Modbus
Daisy Chained Device
on Modbus
To Next
Device on
the Modbus
Segment
+
CO
M
+
CO
M