The Mandala Lighting Controller is a modern design, including local display and programming capabilities. The unit performs an astronomical calculation to determine sunrise and sunset times at the plant's location on any particular date.
Lights on for 1-2 hours, then off.
Different control logic for Grade Level vs. Upper Level lights. Phased pull-in for inrush control.
Phased pull-in for low inrush current.
Possibility of different logic on all 6 circuits.
If all 8 circuits control a 3-pole contactor, 24 lighting circuits.
85-277 VAC. Tolerant of less stable power supply.
Easy setup. No need for laptop computer in Hazloc.
Use inexpensive non-classified switches and lights in Zone 2.
(Similar to intrinsic safety, but for Zone 2)
Simple, standard computer interface.
5 parts per million, within 0.5 seconds per day
Components more readily available.
Simple logic for 24-circuit lighting panel. Non-classified switches and pilot lights.
The Zone 2 filter panel allows this technology to be installed in areas where explosive gas might be present. We use fine filtration units manufactured by C. C. Jensen and distributed by Klassen Specialty Hydraulics. We add motor starters and other control devices in our Restricted Breathing enclosure. The finished product operates from 120 volt single-phase power, and is certified for operation in Zone 2 and Class I Division 2 hazardous areas.
Filtration units are used to remove impurities from lubricating oil. They are often applied on large motors operating at high voltage in dirty environments. The goal is to increase the bearing life to at least the interval between major planned shutdowns.
We offer a spark-safe cord set for hazardous areas. It uses standard twist-lock ends, so it looks and costs more like an ordinary-location cord.
The Spark-Safe cord set is electrically interlocked. There can be no spark, because the receptacle is powered down unless a plug is inserted and locked into place. When the plug is twisted to unlock it, power is disconnected before the plug can be removed.
This protection method is allowed for Zone 2 locations under CSA standard C22.2 No. 60079-15. The protection method is designated “Ex nC”.
Perform an astronomical calculation to determine sunrise and sunset times at the plant's location on the particular date.
Turn the lights on before sunset, and turn them off after sunrise.
Command it to turn on the lights at any time of the day. The lights will remain on until the next sunrise; then return to automatic operation.
Log the total time that the lights have been turned on since installation. A Relamp Alarm can be configured to indicate to the operator when the total lamp time has exceeded a setpoint. This allows plant maintenance staff to replace all lamps at the same time, reducing maintenance costs.
Monitor the ambient temperature to ensure that the lamps will light correctly when energized. If the ambient temperature approaches the low temperature limit of the lamps, turn the lamps on to prevent starting problems.