Specifications

14
BOND CONTROLLERS FROM FRONT PANEL
• Connect to Ethernet switch or router only the controllers that you want to bond.
• On any controller, using the left and right buttons, go to Manual Mode (MNMD).
• Press ‘ENTER’, display will show Password (PSWD), press ‘ENTER’
• Using the left, right, up and down buttons enter ‘0002’ and hold ‘ENTER’ button until display shows one of
the manual modes.
• Using the up and down buttons, go to ‘BOND’, press ‘ENTER’, display will show ‘ITBD’ (initialize bond).
• Press and hold the ‘ENTER’ button until display shows ‘MNMD’. After about 5 seconds, all controllers will
reset. They are then bonded.
SYCHRONIZE MODE (Peer to Peer )
When power is turned on, that controller will initialize itself by closing the valve. A ‘ROOM TEMPERATURE’ sensor
is needed to be connected to only one Controller. A ‘ROOM TEMPERATURE ALARM’ is set only if none of the
controllers have a good air temperature sensor connected. If it does not have a room temperature sensor
connected, it will put itself in ‘COOL’ mode and wait to get the room temperature from another controller. If it does
not receive any command within a minute, it will set the ‘communication alarm’ and then run in ‘SAFETY MODE’ as
described previously. The ‘communication alarm’ clears when it receives any command from that controller.
The controllers switch between ‘COOL’ mode and ‘OFF’ mode based on the warmest temperature reading
from all controllers that have a room temperature sensor.
If any controller decides to go in defrost, all controllers will then go into defrost.
If any controller decides to go in drain mode, all controllers will then go into drain mode.
If any controller decides to go in fan delay mode, all controllers will then go into fan delay mode
If there is a communication alarm at any controller, then the controller will go into defrost as a scheduled defrost
that will terminate on time only.
ALTERNATING MODE (between 2 controllers)
The controller can be configured as an alternating system for dual single-evaporator refrigeration units to provide
redundancy of a refrigerated cold room. Once the network is set up, a CAT/5E cable can be connected between the
2 controllers or a switch/router, connected to the RJ-45 connector.
When the alternating mode is selected, the dual refrigeration units will start pulling down box temperature to
the cut-out set point then both go into OFF MODE(OFF). When the box temperature rises up to cut-in temperature,
the one of the units will come on while the other stays off. The other evaporator will perform the refrigeration in next
cooling cycle.
When the Lead Lag mode is selected, the first controller (lead) will run as stand alone control for the number
of hours as is set “TBLL”. The other controller will stay off (Lag mode) for that same amount of hours. After the one
controller has been running and the other control has been off and in lag mode for the number of hours in ‘Time
Between Lead/Lag’ (TBLL), the first controller will go in Lag mode and the second controller will first go through a
defrost cycle, then run as a stand alone control. The above cycle will keep repeating. If one controller have an alarm
beside the door alarm; then the other become the Lead then the one that have alarm will become the Lag. If both
controller have the alarm beside door alram; the the controller will stay in the current mode.