Bulletin 100-50-9.1 –
Page 135
21.2 CASE CONTROLLER
The Case Controller communicates to the DM and Valve Module via a dedicated private network. This network is not
configurable through software and is not available for third party components. This network can support one Case Controller,
One Display and up to two valve modules for multi-coil cases. 2/22AWG twisted pair is recommended for use between the
modules. The following must be attached across all modules: D- (for communication), D+ (for communication), 24VDC
(Positive side of supply voltage) and "Gnd" (Negative side of 24VDC).
Note: This is only for the dedicated private network between modules, not refrigerated case to refrigerated
case.
21.3 LINE-UP
Case Control
Display Module
Valve Module
24 VDC
POWER
SUPPLY
-
+
Case 1
Case 2
.... Case 8
Each case on a line-up should be connected via a CAT5 Ethernet cable to ensure proper synchronization of key system
functions, such as defrost. The cable must be installed in either Port 1 or Port 2 on the controller; see the following Figures.
Dual Ethernet ports allow simple daisy chain networking of the cases.
21.3.1 LINE-UP SYNCHRONIZATION
From Case
To Next Case
