HUSSMANN CoreLink Emergency Shutdown Configurations Instruction Manual
- June 9, 2024
- HUSSmAnn
Table of Contents
CoreLink Emergency Shutdown Configurations
Instruction Manual
IMPORTANT
Keep in store for future reference!
CoreLink Emergency Shutdown
Objectives:
To handle some safety and other functional priorities in systems like CO2
systems and other special configurations, rack controller would like to shut
down the refrigeration in the cases/refrigeration units.
When CoreLink is controlling the cases/refrigeration units, Emergency shutdown
can be initiated through either a hardwired signal or through communications.
This document describes the configuration, setup and connectivity for both the
methods.
Digital Signal – Hardware Setup
Requirements: CoreLink does not have the ability to accept dry contact at the
digital input. CoreLink requires a source voltage when triggering the digital
input. The source can be 24vac or 24vdc, though it is recommended to use
24vac for reduced polarity risk and simple installation. CoreLink
Wiring Diagram
CoreLink Delivered Configuration
Emergency Shutdown Operation:
Following two shutdown methods are enabled in CoreLink.
Enable/Disabled DI – All digital outputs are disabled. Refrigeration, Defrost,
Lights, Evap Fan, Cond Fan, etc. Case controller continues to data log and
monitor analog input temperatures & pressure. System Enable is always active
on PIN 20 Digital Input.
Refrigeration Shutoff DI (Optional) – Refrigeration, Evap Fan, Cond Fan,
EEV 0% disabled ONLY.
This can be configured on one of the available pins in the Digital Inputs
menu. All other controller operations continue to operate.
Primary Controller
This is for a direct hardwired configuration through a Primary controller like
E2 rack controller.
Install a single 24vac transformer. Use this transformer to provide 24vac
signal to all Corelink case controllers. It is recommended that the polarity
at the Digital output(DO) board be configured as the following:
Relay Open = Controller Enabled| (Primary Controller opens relay for normal
case operation)
---|---
Relay Closed = Controller Disabled| (Primary Controller closes relay for
emergency shutdown)
Note: When configured in this manner, no polarity adjustments at Corelink case controller are required. Landing the wires at the appropriate terminal is only required. If configured reverse, the polarity opposite at the E2, the polarity would have to be adjusted at each individual case controller in the digital input menu which increases the amount of work to complete the install.
Network Configuration – Software Setup
Description: Users can use the RS485 communication network and BAS system to
send network disable commands to each controller. Depending on the BAS user
interface, a user could point to each individual controller and utilize the
same Enable Network or Refrigeration Disable Network commands through
software. This can provide additional system safety through multiply layers
of protection if physical digital input setup was to fail.
Application Programs could be used to activate each controller one at a time
to reduce the load on the refrigeration rack system after emergency shutdown.
Please consult BAS system operation manuals to benefit from these options or
contact your BAS system administrator for application.
Parameter Name| Address| Unit| Scale| Data Type| Data Description and Valid
Range
---|---|---|---|---|---
System Enable| 16#6A06| NULL| 0| BOOL| TRUE, system enable; FALSE, system
disable
via Network| |
Refrig Disable Network| 16#6B00| NULL| 0| BOOL| Refrig Disable network command
if set to 1
CoreLink™
HUSSMANN CORPORATION
BRIDGETON, MO 630442483
U.S.A.
Shutdown