Installation - Corkill Systems Reporoa Engineering 2807D Instruction Manual

THE REPOROA HIGH LIFT GATE CONTROLLER ELECTRONIC SYSTEM
Model 2807D – 2014
INTRODUCTION
The system is driven by a Danfoss VLT2800 series variable speed drive (VLT) which supplies
230 volt three phase to the motors at preset frequencies. The VLT has a filter fitted to protect
the unit from incoming voltage irregularities and noise and to limit interference on the output.
The VLT unit is controlled by an Omron CP1L-L20DR-A Programmable Logic Controller
(PLC) which determines commands from the microswitches on the gate and the main push-
button interfaces.
SUPPLY
Supply is Single Phase 220 - 240 Volt 50/60 Hertz, Voltage tolerance is 220 Volts ± 10%.
Specialised voltage units can be built to order.
A 2.5mm single phase supply fused or circuit breaker protected to 16 Amps is required at the
Main Junction Box at the yard end of the Dairy. The cable should be of the specified size as a
minimum to prevent volt drop in the system due to the long distance normally between the
Main Switchboard and the gate.
It is not recommended to connect the unit via an Earth Leakage device (RCD); the controller
monitors earth constantly to protect the motors, and has a leakage of approximately 8
milliamps.

INSTALLATION

The Multicore cable supplied should be attached to the cable rollers at 1200mm intervals, roll
this cable out with no kinks prior to attaching to the rollers to prevent twisting. Connections
are as per the numbers in the cable and at the connections in the Main Junction Box and the
Main Control Panel. Diagrams are on the following pages.
The Push-Button Station cable is colour coded and should be connected at the Main
Junction Box as per the Low Voltage diagram. If Radio Interference is likely to be severe from
non-filtered Variable Speed Drives in the vicinity, connect the screen of this cable to the Earth
terminal.
Micro switches on the gate are Extra Low Voltage and to be wired to the labelled terminals
in the Main Control Panel, all commons wire to Terminal #3, there are two of these terminals
for convenience. They are mounted on the side of the gate closest to the control box.
The TER Rotary Limit Switch is designed to be mounted at the top of the gate in the end of
the shaft of the lift motor.
The limit switch is designed to sit on the spring bracket.
DO NOT SCREW THE LIMIT SWITCH TO THE BRACKET.
The grub screw in the gear box shaft is sufficient enough to hold the limit switch in place;
damage will result to the switch if this is attempted.
Care should be taken to ensure the covers are correctly refitted on the micro switches also
that all glands are tight on the switches silicon may be applied to these joints as an extra
precaution to prevent moisture ingress.
Copyright June 2001 – Steve Corkill
This manual subject to copyright and not to be copied without the express permission of Corkill Systems Limited
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CSLRHLG-MANUAL-2014.DOC 24/07/2014