Features
- Holes Drilled for Light / Horn and Reset Button in Enclosure
- Single Lights Available in Red, Green, Yellow, Blue, or White
- Units with One of Five User Selectable Lights Available
- Units with Three Layered Lights Available
- ProVu Meter Can be Equipped with up to 8 Relays to Drive Variety of Light & Horn Configurations
- Light / Horn Programmable for Variety of Reset Functions, Including:
- Silence Horn at Any Time
- Light Stays on Until Alarm Clears
- Light Can Be Wired to Flash (Not Available on MOD-LH5CB1) or Stay Steady On
- IP 65 Rated
- 85 dB Horn
- Operates from -5 to 40°C (23 to 104°F)
Overview
ProVu Meter Shown in a PDA2301 Enclosure with MOD-LHRB1 Red Light / Horn and Reset Button. Meter & Enclosure Sold Separately. Assembly Required.
Precision Digital offers a wide variety of NEMA 4 and NEMA 4X enclosures that can be equipped with MOD-LH Light / Horn and Reset Button. The MOD-LH Series is available in three different light configurations. The first option is a factory ordered Light / Horn with a color of either red, green, yellow, blue, or white. The second option is a Light / Horn the user determines the light color (red, green, yellow, blue or white) by connecting the appropriate wire. The third option is a Light / Horn with red, yellow, and green layers the user can turn on independently.
The MOD-LH can be powered from the ProVu’s 200 mA transmitter power supply with enough power left over to drive most transmitters.
The light(s) and horn can be controlled independently of each other by up to eight separate relays on the ProVu meter. These relays can be programmed for automatic or manual reset action to satisfy a wide variety of audible and visual alarm applications. The light can be programmed to flash (not available on MOD-LH5CB1) or stay steady-on.
When MOD-LH is ordered, the accompanying enclosure on the order comes with the holes pre-drilled for the Light / Horn and the Reset Button and the user performs the mounting and wiring. Meter and enclosure are sold separately. The Light / Horn and the Reset Button can also be ordered as separate items and the user performs all hole-drilling, mounting and wiring as desired.
Note: The Light / Horn accessory is powered from the 200 mA transmitter power supply, so when this is installed, the meter’s transmitter power is downgraded from 200 mA. See Transmitter Power Supply specification for details.
Applications
There are a wide variety of ways these Light / Horn devices can be controlled by the ProVu’s two, four or eight relays to satisfy visual and audible alarm applications. Please feel free to contact tech support to discuss your particular application. The following examples illustrate some typical applications.
MOD-LH Models
The MOD-LH models are the simplest devices in the Series and are made up of a single-color light and horn. A typical way to use the MOD-LH is to program the ProVu so the horn can be silenced at any time via the Reset Button or F3 front panel button on the ProVu, and light to reset automatically when the alarm clears:
| Relay | Connected to | Default Reset |
| 1 | Flashing Light(1) | Auto reset |
| 2 | Horn | Silence with Reset Button |
| 3 | User Device | As user desires |
| 4 | User Device | As user desires |
| 1 Light can be wired to flash or stay steady on. | ||
MOD-LH5CB1
The MOD-LH5CB1 shows one color at a time and the light color (red, green, yellow, blue or white) is determined by which wires are connected to power through the ProVu’s relays. A typical application for the MOD-LH5CB1 might involve lighting up the red light to indicate high and low alarms and the green light to indicate everything is OK using the ProVu’s four internal relays:
| Relay | Purpose | Range | Light/Horn | Action |
| 1 | Low alarm | < 199 | Red light | Auto |
| 3 | Low alarm | < 199 | Horn | Latch |
| 2 | All OK | 200 to 500 | Green light | Auto |
| 2 | High alarm | > 500 | Red light | Auto |
| 4 | High alarm | > 500 | Horn | Latch |
MOD-LH3LCB1-RYG
The MOD-LH3LCB1-RYG can light up red, yellow or green bands as determined by which wires are connected to power through the ProVu’s relays. A typical application for the MOD-LH3LCB1-RYG (and the default factory setting) might involve lighting up the green light to indicate everything is OK, the yellow light to indicate a High warning, and the red light to indicate a High alarm. The Horn will also sound at both the Warning and High alarms and can be manually reset at any time with the front panel reset button:
| Relay | Purpose | Range | Light/Horn | Action |
| 1 | All OK | < 199 | Green light | Auto |
| 2 | Warning | 200 to 500 | Yellow light | Auto |
| 3 | Warning | 200 to 500 | Horn | Latch |
| 2 | High alarm | > 500 | Red light | Auto |
| 4 | High alarm | > 500 | Horn | Latch |
Dimensions Units: Inches (mm)
Connections
MOD-LH Models
Connections shown for a red light model. For other MOD-LH models, the red wire is the color of the light. Connect the red and black wires for a Steady On light and red and gray wires for Flashing light.
MOD-LH5CB1
Connect the LED color to the plus supply and the black wire to the minus supply to turn the LED on. Be aware of limitations for applications requiring different color lights for different alarm conditions.
MOD-LH3LCB1-RYG
Connect the LED color to the plus supply for a Steady On light and LED color and gray wires to the plus supply for Flashing light. The black wire should be connected to the minus supply.
Wiring Connections for MOD-LH Models
Using ProVu's Internal Power Supply
Using External Power Supply (PDA1024-01)
MOD-LH Hole Locations
When MOD-LH is ordered with an enclosure, the enclosure comes pre-drilled with holes for Light / Horn and Reset Button.
Light / Horn
The Light / Horn hole is on the top, back left corner of the enclosure.
Reset Button
The Reset Button is centered on the cover of the enclosure below the meter about an inch off the bottom of the cover except on the PDA3400 series where it is mounted on the side of the enclosure.
Reset Button
The reset button can be used to silence the horn or turn off the light (9 labels provided).
Reset Button
9 Labels Provided
