Issue 1.1 (09/03/2016) Page 1 of 3

2kW Single Phase Power Regulators

© Copyright Annicom 2016. All Rights Reserved

The AX-MPR1-2 DIN Rail mounting Power Regulatorsprovide continuously adjustable control of electric heatingloads from a 0-10V control input. Applications includeelectric heating coils, heating cables and electric furnaces.The AX-MPR1-2 uses solid-state switching with “zerocrossing technology” for minimum RFI and providesaccurate switching control. The unit features overtemperature protection with automatic reset, LED indicationof Output ON and are designed to mount on TS35 sectionDIN Rail. No additional heatsinks are needed.

Product overview

0-10Vdc Control Input

2kW Nominal Heater Duty

PWM Control

Auto Reset Over Temperature Protection

Features Line Powered

Neutral Pass Through Terminals

LED Indication

DIN Rail (TS35) Mounting

Product specificationsInput: 0-10VdcNominal Heater Duty: Killowatts 2kWMax Load: Amps 8.7ADissipated Heat Watts 12WRated Supply: 220-255Vac / 50-60Hz (Line powered)LED Indication: ON when output is onTerminals: Control Rising clamp for 0.5-2.5mm² cable

Power Rising clamp for 2.5mm² stranded or 4mm² solid core cableAmbient Temperature Range: 0 to 55˚C Note; The units are rated at 40˚C. If using at higher ambient

temperature de­rate the units by 10% for every 5˚C above 40˚CDimensions: 77 x 85 x 53Weight: 0.2 KgsCountry of Origin: United Kingdom

Order codesAX-MPR-1-2 2kW Single Phase Power Controller

Page 2 of 3© Copyright Annicom 2016. All Rights Reserved

2kW Single Phase Power Regulators

The AX-MPR1-2 Power Controllers are designed for mounting on a TS35 Section DIN Rail and must be installedwith their heatsink cooling fins in a vertical plane. Allow a minimum of 100mm between units mounted in a verticalplane.

Electrical Installation:Installation must be carried out by a suitably trained electrician, and in accordance with the relevant statutoryregulations.

Load Supply and Back-up Protection:It is recommended that a load disconnect switch and a contactor are installed in the load supply. The supply to thecontactor coil should be interrupted by sensors for over temperature in the heater and also upon air flow loss. Fusesor MCB’s (miniature circuit breakers) are required to provide back-up protection. High Speed Fuses will protect thesolid-state switching devices against short circuit currents.

Control Signal:All low voltage signal and supply cables should be kept separate from high voltage or mains cables, separate traysor conduit should be used. Screened cable should be used for connections to BMS Controllers, where possible thecable screen should be connected to a functional earth (not mains safety earth); normally the screen should be earthedat one end only to avoid earth loops.

Cycle Time & Signal Rescaling:The Cycle Time is preset. An 0-10Vdc Input Signal of 5V equates to the load being at 50% ON and likewise withan input of 2./5V the load will be 25% ON. A 10V input will equal 100% i.e. full ON. Adjustment of the Cycle Timeand signal rescaling is possible using VR1 (rescaling) and VR2 (cycle time) but is not normally required. Caution:Adjustment of these controls can cause an overload condition and subsequent destruction of the AX-MPR1 unit.DO NOT ATTEMPT TO ADJUST THESE CONTROLS WITHOUT REFERENCE TO THE FACTORY.

Manual Override:The AX-MPR1 Series are supplied preset to the Auto position, it is possible to manually override the Input Signalby placing the M/A Jumper in the M position. With the jumper in the M position the load will be 100% ON. Theoutput load can be adjusted downwards using the signal rescaling facility. (See Caution above).

Maximum Heating Load:The power rating of the units are given as a guide. The maximum current (which is dependant on the actual supplyvoltage and heating load) as shown in the above table must not be exceeded.

Installation and configuration

Connection Control0-10V 0V

N Heater L

VR 2

VR 1

SupplyLN

Heatsink

AM

NOTE: It is imperative that the powerconnections are fully tightened, withoutexcessive force, and ensure the maximumarea of cable is in contact with the terminals.

Page 3 of 3© Copyright Annicom 2016. All Rights Reserved

2kW Single Phase Power Regulators

Every effort has been taken in the production of this data sheet to ensure accuracy. Annicom do not acceptresponsibility for any damage, expense, injury, loss or consequential loss resulting from any errors oromissions. Annicom has a policy of continuous improvement and reserves the right to change thisspecification without notice.

The AX-MPR1-2 is designed to control electric heating loads in linear proportion to the incoming 0-10Vdc controlsignal. Control is by solid-state semiconductor devices which controls the load using pulse width modulation (PWM)techniques. These devices feature zero crossing point switching of the AC load which virtually eliminates RFIproblems.

CAUTION!In normal operation the heatsink surface can exceed 90˚C. Dangerous potentials exist on the PCB and particularcare should be taken. The AX-MPR1-2 Power Controllers must be installed in accordance with the relevant statutoryregulations and installation must be carried out by an experienced and fully qualified engineer.

Ventilation:The AX-MPR1-2 are designed for a maximum ambient temperature of 55˚C which should not be exceeded. Ifnecessary, enclosures or control panels should be ventilated with a cooling fan. See note in product specificationfor de­rating to be applied above ambient of 40˚C.

Over Temperature Monitoring:An electronic thermal cutout is fitted to the heatsink to protect against over temperature. The AX-MPR1-2 willswitch off the load if the heatsink temperature exceeds approx. 90˚C and will reconnect the load once the heatsinktemperature has dropped below 85˚C. Under normal operating conditions the heatsink temperature will not reach90˚C but this might occur, for example, if the ambient temperature exceeds 40˚C.

Operation