Q: How does monochrome white Cove Accent Lighting work?
The Cove sticks are continuously powered by 24VDC from the ELT600-24U power box.
The default state of the Cove sticks is off.
When a 12VDC dim control voltage is supplied to them, the Cove sticks turn on.
The brightness is controlled by special pulse width modulation (PWM) of the 12V dim control signal.
Everbrite can supply a dimmer keypad, or a XLIM translation box for third party 0-10V dim control.
The default state of the Cove sticks is off.
When a 12VDC dim control voltage is supplied to them, the Cove sticks turn on.
The brightness is controlled by special pulse width modulation (PWM) of the 12V dim control signal.
Everbrite can supply a dimmer keypad, or a XLIM translation box for third party 0-10V dim control.
Q: How does RGB color Cove Accent Lighting work?
The Cove sticks are continuously powered by 24VDC from the ELT600-24U power box.
The default state of the Cove sticks is off.
When 3 channels of 12-21VDC color selection control voltage is supplied to them, the Cove sticks turn on.
The color selected is controlled by special pulse width modulation (PWM) of the three-color control signals.
Everbrite supplies a color control keypad ECL-49-KIT that sends digital commands to the ECL-42-02 driver box.
The driver board in that box produces the appropriate AC line synchronized PWM signals to control the desired color.
These control signals must go through signal filters before entering the MRI room.
The default state of the Cove sticks is off.
When 3 channels of 12-21VDC color selection control voltage is supplied to them, the Cove sticks turn on.
The color selected is controlled by special pulse width modulation (PWM) of the three-color control signals.
Everbrite supplies a color control keypad ECL-49-KIT that sends digital commands to the ECL-42-02 driver box.
The driver board in that box produces the appropriate AC line synchronized PWM signals to control the desired color.
These control signals must go through signal filters before entering the MRI room.
Q: What are the wiring rules for a Cove installation?
Each ELT600-24U power supply box can power up to 160' of Cove.
Any output from the ECL-35M(V)-xx fuse box can only drive a run of 26' of Cove.
The monochrome dimmer keypad ECL-53-CR can drive up to 222' of white Cove.
If you need more than 222' of Cove from a single dimmer control, then you also need an ECL-54-BOOST which can drive 555'.
These dimming drive lengths also apply to the XLIM 0-10V dimming adapter.
If you have RGB colored Cove, then the ECL-42-02 RGB driver box can control up to 555'.
When using signal filters to broach the MRI room wall, you must solder the wires on the equipment room input side of these filters!
Failure to do so will often result in flickering effects in the Cove sticks.
You can also get flickering in the Cove sticks if the signal filter input feedthrough capacitor has been damaged.
So be careful when you solder the signal filters.
Any output from the ECL-35M(V)-xx fuse box can only drive a run of 26' of Cove.
The monochrome dimmer keypad ECL-53-CR can drive up to 222' of white Cove.
If you need more than 222' of Cove from a single dimmer control, then you also need an ECL-54-BOOST which can drive 555'.
These dimming drive lengths also apply to the XLIM 0-10V dimming adapter.
If you have RGB colored Cove, then the ECL-42-02 RGB driver box can control up to 555'.
When using signal filters to broach the MRI room wall, you must solder the wires on the equipment room input side of these filters!
Failure to do so will often result in flickering effects in the Cove sticks.
You can also get flickering in the Cove sticks if the signal filter input feedthrough capacitor has been damaged.
So be careful when you solder the signal filters.
Q: On RGB Cove, my colors are inconsistent, and do not match the "standard colors".
The Everbrite signal filters have dual isolated channels, other multiple channel signal filter brands may not be sufficiently isolated.
This can lead to significant cross talk (color bleeding) and inconsistent colors.
The "standard" colors generated by the ECL-49-KIT keypad are:
Key 6 is especially for hues of white, the "standard" is 5000ºK.
This can lead to significant cross talk (color bleeding) and inconsistent colors.
The "standard" colors generated by the ECL-49-KIT keypad are:
- Red
- Amber
- Green
- Blue
- Magenta
- Mixed White
Key 6 is especially for hues of white, the "standard" is 5000ºK.
Q: When I press a key on the ECL-49-KIT Keypad, a color is displayed, but when I release the key, all the Cove fixtures go back to white.
The keypad just sends a selection code to the circuit board in the ECL-42-02 driver box.
There is a 12 position dip switch on the board that sets various functions for the circuit board.
These small slide switches can be positioned with the tip of a pen or other small point.
All switches should be in the off position except #9 and #10 (these tell the board what keypad is attached).
If switch position #8 is turned on by mistake, then the problem described above will occur.
Switch #8 is a factory test setting to force all outputs to full on (cool white).
Click switch #8 on and off a couple of times, leave it in the off position, and cycle the power to the ECL-42-02 driver box.
There is a 12 position dip switch on the board that sets various functions for the circuit board.
These small slide switches can be positioned with the tip of a pen or other small point.
All switches should be in the off position except #9 and #10 (these tell the board what keypad is attached).
If switch position #8 is turned on by mistake, then the problem described above will occur.
Switch #8 is a factory test setting to force all outputs to full on (cool white).
Click switch #8 on and off a couple of times, leave it in the off position, and cycle the power to the ECL-42-02 driver box.
Q: One section of my Cove sticks is dark. How do I troubleshoot this?
If this is an existing installation, then it is likely that one or more of the Individual Cove sticks in the dark section is shorted out across the 24VDC.
This will blow the fuse for that section in the ECL-35M(V)-xx class 2 wiring and distribution fuse box.
The 24VDC power originates in the ELT600-24U Power Box, and then goes into the MRI room through a facility filter.
The ECL-35M(V)-xx Wiring Distribution and Fuse box then conducts that 24VDC out to the terminal strip board that the Cove fixtures plug into.
If you have a run of Cove fixtures out then, it is likely that one of your Cove fixtures in that run is shorting out the 24VDC and blowing the fuse in the ECL-35M(V)-xx fuse box.
One by one, try unplugging the fuses associated with the ECL-35M(V)-xx terminal blocks that are in use.
This will indicate which cable feeds the Cove run that is dark.
Go out to the terminal strip at the middle of the run of Cove fixtures that is out and unplug the fixtures on one side.
Take a fuse from an unused position in the ECL-35M(V)-xx and put it in the position of terminal block that feeds the run that is out.
If half the Cove fixtures come on then you know the bad fixture is in the other half of the run.
Otherwise, the replacement fuse will blow, and you know the bad fixture is in the half run left plugged in.
So now you need to narrow down which Cove fixture is bad, so unplug all the fixtures on the bad side.
Then replace the fuse (if needed) and re-plug fixtures one at a time on the bad side.
When the fuse blows again, you know that you have found the bad fixture.
Or if you can remove the suspect string of fixtures from the MRI room then you can use an ohm meter to check for a short on the power pins on each fixture.
The power pins are the heavier gauge white (+) and black (-) wires with no pin in-between them on one side of the connectors.
The bad fixture will read close to zero ohms across the power pins.
Perhaps the easiest way to check out fixtures is to borrow the terminal strip board from the middle of the Cove fixture run and use diode check.
This will blow the fuse for that section in the ECL-35M(V)-xx class 2 wiring and distribution fuse box.
The 24VDC power originates in the ELT600-24U Power Box, and then goes into the MRI room through a facility filter.
The ECL-35M(V)-xx Wiring Distribution and Fuse box then conducts that 24VDC out to the terminal strip board that the Cove fixtures plug into.
If you have a run of Cove fixtures out then, it is likely that one of your Cove fixtures in that run is shorting out the 24VDC and blowing the fuse in the ECL-35M(V)-xx fuse box.
One by one, try unplugging the fuses associated with the ECL-35M(V)-xx terminal blocks that are in use.
This will indicate which cable feeds the Cove run that is dark.
Go out to the terminal strip at the middle of the run of Cove fixtures that is out and unplug the fixtures on one side.
Take a fuse from an unused position in the ECL-35M(V)-xx and put it in the position of terminal block that feeds the run that is out.
If half the Cove fixtures come on then you know the bad fixture is in the other half of the run.
Otherwise, the replacement fuse will blow, and you know the bad fixture is in the half run left plugged in.
So now you need to narrow down which Cove fixture is bad, so unplug all the fixtures on the bad side.
Then replace the fuse (if needed) and re-plug fixtures one at a time on the bad side.
When the fuse blows again, you know that you have found the bad fixture.
Or if you can remove the suspect string of fixtures from the MRI room then you can use an ohm meter to check for a short on the power pins on each fixture.
The power pins are the heavier gauge white (+) and black (-) wires with no pin in-between them on one side of the connectors.
The bad fixture will read close to zero ohms across the power pins.
Perhaps the easiest way to check out fixtures is to borrow the terminal strip board from the middle of the Cove fixture run and use diode check.
Contact
📌Bruce Neville - Engineering Manager
☏ 1-620-213-4451 Direct Voice & SMS
⏱ Mon - Fri 8AM - 5PM CST
📌Bruce Neville - Engineering Manager
☏ 1-620-213-4451 Direct Voice & SMS
⏱ Mon - Fri 8AM - 5PM CST
Company
Everbrite Electronics Inc.
720 West Cherry Street
Chanute, Kansas 66720
Everbrite Electronics Inc.
720 West Cherry Street
Chanute, Kansas 66720