Heater Burn-out Detectors

Heater 'Burnout' Detector

Single and 3-phase

Stalled Motor Detector
Self powered (When current is above 5A)

BO Detector Series Burned out heater elements cost time and money to diagnose. Don't let them cost you down time. Get the Burnout detector! Unique self-powered design saves complexity and wiring time. The burnout detector works by sensing the AC current and activating at the specified set point. Sensing a repeatable specific trip-point, allows the burnout detector to monitor multiple parallel connected heater elements. The BO series can detect stalled motors by sensing the out of range current. In 3-phase operation (using a delta or 4-wire-Y configuration), of the Transtronics Burnout detector allows one sensor to monitor all three phases. Upon detection, it lights the LED and optionally activates an output. Four basic output versions are available: LED lamp only, open collector, Triac and form C relay. Options include: large pass opening, adjustable set-point and remote mounting LED.

Applications:

Standard 0.875" Opening

Plastic Extrusion Injection Molding
Tank Heaters
Process Heaters
Stalled Motor Detector
Load Shedding
Dust collectors

Specifications
Set point current range (specify with order)	to 1KA (When setpoint is below 5A 5Vdc must be applied to pin 3)
Set point accuracy	+/-15% (5% on adjustable units) 10% dead-band
Output current Relay option	4A @ 220 Vac 5A@30Vdc/120Vac see drawing below for pin out
Triac output version	2A @ 220 Vac
Transistor output option	20 mA 24V (Pin 8 negative.; Pin 6 positive)
Ambient Operating Temperature	0 C to 60 C
Octal Case Size	2.75 X 1.75 X 2.375 inches (excluding octal pins)
Pass through opening	22.2mm [0.875"]
Adjustable versions available
Relay power supply	12V or consult factory

[] - denotes legacy units

Operation

In single-phase configurations, LED and optional outputs are active on normal operation.
When applied in both the Delta and 4-wire-Y 3-phase configurations, LED and optional outputs are active on heater failure.
The calibrated set point allows sensing of single element failure in parallel connected heater elements in both single and 3-phase installations.
The Delta configuration requires three wires threaded through the sensor; make sure you have enough room.
The 4-wire-Y 3-phase configuration provides a simple neat installation with minimal wiring.
Using multiphase with PWM power controllers may keep it from working - you would need to see the signal when the power is full on.

Wiring Diagrams

One or 3 Wire(s) with Ac current are threaded through opening.
No electrical contact is made with the current carrying wire

Remote mount LED wiring Pin 2 goes to + (plus) or the long lead
Pin 4 goes to - (minus) or the short lead. No dropping resister is required
Remote mount LED is not compatible with Triac version

Din rail mountable bases are available as an accessory

Let Transtronics help you with your application. We want to help you solve your automation problems.

For Pricing call 785 841 3089 (most versions are less than $100)
Order number	Description
BO-LED	LED only
BO-OC	Self powered Transistor output
BO-TRIAC	With self powered 2A Triac output
BO-RELAY	4 A Form C Relay output - requires external power
-ADJ	Adjustable set point option
-L24	External 24 power to LED (Pin 7) option
OCT-SOC	Din-rail/panel mountable octal base accessory

Disclaimer

This information may have errors; It is not permissible to be read by anyone who has ever met a lawyer.
Use is confined to Engineers with more than 370 course hours of electronic engineering for theoretical studies.
ph +1(785) 841-3089 Email inform@xtronics.com