Description
The RDM Brooklands control tray PR0029L-ACF is a control system. The tray is used in conjunction with
the Brooklands wiring loom which connects to the tray using a 19 pole multiway connector. This loom
connects to all the low voltage components in the cabinet, these being the temperature probes,
refrigeration solenoid valve (24vdc), evaporator fans (24vdc) and a fan fail signal (volt free). There is a
separate mains voltage connector which connects to the cabinet lights. Two versions of the Brooklands
tray (PR0029-ACF & PR0037) have an additional mains connector for use with mains voltage evaporator
fans.
The tray is designed to be used on sites utilising a standard refrigerant or CO2.The unit has a Solid State
Relay (SSR) and through the in-built software the user can set the valve type for Mechanical Liquid Line
Valve (LLV) or Electronic Expansion Valve (EEV) control. The PR0029L provides a varying low voltage
output supply to control the evaporator fans. The PR0029L ACF and PR0037 provides a mains feed to
control the evaporator fans, the PR0037 has the addition of a higher specification relay to drive LED lights.
The RJ45 connector found at the rear of the tray is a serial RS232 port and must be connected to an
appropriate communications module such as an IP Futura Module (PR0016) or Mercury switch (PR0018 or
PR0018-PHI) or RS485 Legacy Module (PR0026). This allows communication with compatible front ends
such as the RDM Data Manager or Data Director.
The RDM Brooklands tray PR0033 is fitted with an electro-mechanical relay to drive a LLV and the PR0033E
has an SSR to operate an EEV. The PR0033/E series control tray is designed to be used only on IP networks
only and must be connected to an appropriate IP communications module or Mercury Switch. The tray has
the addition of a PWM (Pulse width modulated) output for controlling intelligent evaporator fans. The
controller has a “CO2 App parameter” to allow them to be used in conjunction with an RDM Data Manager,
Plant Pack Controller and CO2 Pump Station for load shedding on CO2 sites.
Addressing
The controller will log onto the network when it is first powered up. You must set the address using the front
accessed rotary switches prior to power up. If you change the location of a tray from one case section to
another, you should change the rotary switches to the new address before powering up the tray in the new
location.
NOTE: V1.3 software does not support Genus RS485
networking.
Id
To set the network id, use the front accessed rotary switches and set the address of your choice. Each device
on the network must have a unique address number.
(Normally set to Bay/case number such as 103 = Bay10 case 3)
Parameter Settings
All parameter settings are modified using the RDM Data Manager front-end alarm panel, a service or install
level password is required to alter any settings. Default settings are shown below
Valve Type Selection
The PR0029L & PR0037 Brooklands control tray has a parameter to set the valve type (EEV or TEV) via the
front end if the controller software is version V2.0 or higher or V7.5 or higher. On earlier software versions,
V6.9 or above, the valve type can only be changed using a PC connected to the controller. If the tray has V1.4
software then the valve type cannot be changed and is fixed as EEV only. The default factory setting is EEV.
The PR0033 Brooklands control tray can only be used with a thermostatic expansion valve (TEV).
The PR0033E Brooklands control tray can only be used with an electronic expansion valve (EEV).
On the PR0033/E range there is no user settable parameter to set valve type, this is fixed to the hardware type
PR0033 or PR0033E.
