EMX ULT-PLG Manuals & Support

The EMX ULT-PLG is a single channel plug-in loop detector that plugs into a gate operator board through a 10-pin connector. It runs on 12 to 24 VDC and draws 15 mA.

It can be used in center, reverse and exit loop positions. Outputs are solid-state. Output B can be set for pulse, presence, loop fault or Detect-On-Stop.

Identify your model

The ULT-PLG is a small board with a 10-pin female connector, a rotary sensitivity switch and an ULTRAMETER display. It is for operators with a 10-pin plug-in detector port. For an 11-pin socket, see the MVP D-TEK or ULT-MVP-2.

Key specs

Channels	1 loop
Power	12 to 24 VDC, 15 mA
Connector	10-pin female plug-in
Outputs	Solid-state (open collector): presence, Output B, Output B inverted
Sensitivity	10 levels, 0 to 9, with ULTRAMETER display
Loop frequency	4 settings
Loop inductance	20 to 2,000 µH
Operating temperature	-40 to 180 °F

Manuals and documents

Installation Manual

ULT-PLG Instruction Manual
Rev. 1.9 · 6 pages View PDF: ULT-PLG Instruction Manual (opens in a new tab)
Loop Wire Installation
2 pages View PDF: Loop Wire Installation (opens in a new tab)
Lite Preformed Loop Instructions
2 pages View PDF: Lite Preformed Loop Instructions (opens in a new tab)

Spec Sheet

ULT-PLG Spec Sheet
2 pages View PDF: ULT-PLG Spec Sheet (opens in a new tab)

Troubleshooting

The green LED shows power and loop faults. The red LED shows detect. The ULTRAMETER shows the sensitivity a vehicle needs.

Green LED

On: normal operation.
Fast flash: shorted or open loop now.
Two fast flashes repeating: a past loop fault.

Missed or false detects

Hold a vehicle on the loop and set the sensitivity to the ULTRAMETER number. Most sites run 3 or 4.
Turn on ASB (DIP 8) to keep high-bed vehicles detected.
If the reading moves with the loop empty, change the loop frequency to stop crosstalk.

Frequency count

The red LED flashes the loop frequency, one flash for each 10 kHz, then the detector retunes.

Common questions

It fits operators with a 10-pin plug-in loop detector port. Check the operator manual for the port and pinout before you order.

No. Outputs are solid-state open collector outputs that the operator board reads directly.

Most sites run 3 or 4. Drive a vehicle onto the loop and set the switch to the number the ULTRAMETER shows.

Use direct-burial loop wire such as 16 AWG XLPE, not THHN. Twist the lead-in about 6 turns per foot from the loop to the detector, and seal saw cuts with loop sealant.