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at which the light will turn off. Setting these set points is covered later in this
document under “Configuring the ERDRC”
The daylight harvesting application will override the Auto-ON feature of
occupancy sensors if the light level is sufficient and calls for the lights to be off.
For example: If the daylight application calls for the light to be off, the motion
sensor will not turn the lights back on.
The daylight harvesting application can be overridden by a manual wall switch
when the light is off by clicking on. If the light level remains above the Light-OFF-
Set point, the controller will turn the light off again after 250 seconds.
The daylight harvesting application does not affect the operation of the wall
switch or motion sensor when the light is on. If the light is on, either the switch
or motion sensor can override the light off.
Occupancy Based Lighting Applications
The ERDRC will turn the lights OFF when there is no motion detected in the room
indicated by an Echoflex motion sensor. The ERDRC can be configured to turn
the lights ON immediately (Auto-ON) if the motion sensor detects motion, see
the section titled “Configuing the ERDRC“.
There is a configurable time period between the last detected motion and the
point where the lights turn off. There are 6 settings for this time out period. The
time out period is 15 minutes by default but can be set to a value of 5 to 25
minutes in 5 minute increments, see the configuration section. The timer will
reset if the sensor detects motion. If the timer expires, the light will turn off.
Multiple motion sensors can be ganged together logically so if only one sensor
detects motion or the internal timer has not expired, the light will remain on.
Turning the lights on with a linked wall switch will reset the timer. Turning the
light off with the wall switch will override Auto-ON (if enabled) for the duration
of the time out period. Any motion detected by the sensor during this period will
reset the timer. Once the timer has expired, the override will be released. If the
wall switch is used to turn the light on during the time period, the override will
also be released.
Wired Occupancy Sensor Applications
The ERDRC has a 24V output to power a wired occupancy sensor. It can be used
with any brand of 24V occupancy sensor using single or dual technology. When
a wired sensor is connected to the low voltage input, the ERDRC controller
operates the same as if it was a wireless sensor. The occupancy state of a
connected wireless sensor can be shared with other controllers by linking the
ERDRC to those controllers. Linking the ERDRC to other controllers is covered
later in this document under the section, “Configuring the Status Telegram”.
