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The Power Output Modules (POMs) are an essential component of the SIPLUS HCS4200 heating control system.
Up to 24 Power Output Modules can be operated on one Central Interface Module (CIM), split over 2 racks.

There are 4 Power Output Module versions:

POM4220 Lowend

POM4220 Midrange phase control

POM4220 Highend

POM4220 Flexible

16 outputs for switching resistive loads.

Rated voltage 230 V AC

A current of up to 6.3 A can be used per output.

The two phases and neutral conductor are connected via a 3-pin connector (mating connectors are included in the scope of delivery).

The heat emitters are connected via two 8-pin connectors (mating connectors are included in the scope of delivery).

One fuse per output for supply circuit.

Module simply slides into the rack.

Heat dissipation via an optional fan module at the top of the rack (for 4 POM4220).

Attachment is with one screw at the bottom and another one at the top.

Three diagnostics LEDs for displaying module faults.

Sixteen diagnostics LEDs for displaying errors at the outputs.

12 outputs for switching resistive loads.

Rated voltage 230 V AC and 277 V AC

A current of up to 16 A can be used per output.

The heat emitters are connected via two 6-pin connectors (mating connectors are included in the scope of delivery).

Heat dissipation via an optional fan module at the top of the rack (for 4x POM4220).

Twelve diagnostics LEDs for displaying errors at the outputs

8 outputs for switching resistive loads.

Rated voltage 230 V AC, 277 V AC, 400 V AC and 480 V AC

A current of up to 20 A can be used per output.

The heat emitters are connected via two 4-pin connectors (mating connectors are included in the scope of delivery).

Eight diagnostics LEDs for displaying errors at the outputs.

12 outputs for switching resistive loads.

Rated voltage 45 V AC, 70 V AC, 110 V AC, 230 V AC and 277 V AC.

Power triacs

Protection of triacs and opto-triacs against overvoltages by Transil diodes

Transfer of the diagnostics information to the central interface module (CIM)

Power Output Module POM4220 Lowend and POM4220 Flexible

Half-wave control:
This is the control type in normal operation. At every zero crossover, the output is controlled depending on the parameterized setpoint value. The controller outputs are set in values from 0 to .

Power Output Module POM4220 Midrange phase control

Half-wave control:
This is the control type in normal operation. At every zero crossover, the output is controlled depending on the parameterized setpoint value. The control variable is set to values between 0 and .

Soft start:
Phase control is executed for a limited time in order to achieve a gradual warming of the heating elements (e.g. for shortwave infrared sources). Switches to half-wave control when the time has expired. The control variable is set to values between 0 and .
Various soft start versions are available for selection:

Version 1: Time-optimized version of the soft start that enables the heating elements to be warmed up very quickly.
The time required for one channel is about 500 ms.

Version 2: Slower version of the soft start that ensures the heating element is not unduly loaded.
The time required for one channel is about 2 s.

Phase control:
Phase control is executed permanently in order to achieve even heat dissipation and avoid disruptive emitter flickering with low setpoints. Phase control can sometimes cause EMC interference on the power supply lines which then has to be filtered on the system side.

Power Output Module POM4220 Highend

Adaptive soft start: During the adaptive soft start the phase angle is adapted to the existing heating element during runtime to avoid fuse triggering but to achieve the highest possible starting speed. The duration of the soft start is therefore dependent on the heating element being used.

Power Output Module POM4220 Lowend

16 power outputs of 230 V each (8 outputs per phase)

Switching capacity per output: Max. 1449 W at 230 V.
Please note: Short-wave halogen or infrared emitters, so-called flash emitters, have a high switch-on current due to their relatively low cold resistance. This switch-on current can be a multiple of the rated current especially during the initial half-waves. This can lead to the fuse being triggered. There is a limit to a switching capacity of 750 W when using flash emitters at 230 V.

Switching capacity per Power Output Module: Max. 16100 W at 230 V

12 power outputs of 230 V/277 V each (6 outputs per phase)

Switching capacity per output: Max. 3680 W at 230 V or 4432 W at 277 V.
Please note: Short-wave halogen or infrared emitters, so-called flash emitters, have a high switch-on current due to their relatively low cold resistance. This switch-on current can be a multiple of the rated current especially during the initial half-waves. This can lead to the fuse being triggered. There is a limit to a switching capacity of 1600 W when using flash emitters at 230 V.

Switching capacity per Power Output Module: max. 23,000 W at 230 V or 27,700 W at 277 V.

8 power outputs of 230 V/277 V or 400 V/480 V each (4 outputs per phase)

Switching capacity per output: max. 4600 W at 230 V, 5540 W at 277 V, 8000 W at 400 V at 9600 W at 480 V.
Please note: Short-wave halogen or infrared emitters, so-called flash emitters, have a high switch-on current due to their relatively low cold resistance. This switch-on current can be a multiple of the rated current especially during the initial half-waves. This can lead to the fuse being triggered. There is a limit to a switching capacity of 2700 W at 230 V and 4800 W at 400 V when using flash emitters.

Switching capacity per Power Output Module: max. 23,000 W at 230 V, 27,700 W at 277 V, 40,000 W at 400 V and 48,000 W and 480 V.

Power Output Module POM4220 Flexible

Switching capacity per output: max. 720 W at 45 V, 1120 W at 70 V, 1760 W at 110 V, 3680 W at 230 V or 4432 W at 277 V.
Please note: Short-wave halogen or infrared emitters, so-called flash emitters, have a high switch-on current due to their relatively low cold resistance. This switch-on current can be a multiple of the rated current especially during the initial half-waves. This can lead to the fuse being triggered. There is a limit to a switching capacity of 1600 W when using flash emitters at 230 V.

FunctionPOM4220 Lowend / FlexiblePOM4220 MidrangePhase controlPOM4220 HighendHalf-wave controlXXXPhase control XXStipulated soft start (fixed number of half-waves) XXAdaptive soft start  XExplicit heating switch-onXXXTime-delayed channel start-upXXXSoft start during heater operation  XChannel control via setpointsXXXChannel control via fieldsXXXLine voltage compensationX1)X1)XPower control  XParameterization of behavior of the power outputsXXXConnection types of the loads:XXXStar connection with N conductor (single-phase) X Open delta connection (single-phase) X2) Star connection without N conductor (2-phase) X Two-pole switchingXXXMonitoring phase connection  X2)Rotating-field testX1)X1)XLine voltage monitoringXXXFrequency monitoringXXXTemperature monitoring (heat sink temperature)XXXMonitoring of power channels  XMonitoring of power channels with loads connected in parallel  XMonitoring of total current  XMonitoring of residual current  XX1) with P/M-U/IX2) only for economy circuit type of connection

A fan module can be optionally mounted at the top of the rack so that 4 POMs can be ventilated and controlled dependent on the internal temperature.

An NTC thermistor is installed in the device to monitor the internal temperature. An alarm threshold is defined for the internal temperature. The following reactions are triggered when the threshold is overshot:

Signal to the higher-level controller.

The outputs are deactivated - regardless of which output response was configured for the error.

Implicit diagnostics functions are provided as standard to detect the following faults (diagnostics cycle does not affect the heating power):

Leading fuse defective / triac at high resistance (exception: setpoint value 0%).

Triac failure (exception: setpoint value ).

Connecting cable defective (short-circuit and interruption) or load is defective (short-circuit and interruption)

Additionally for POM4220 Highend: Connecting cable defective (short-circuit and interruption) or load is defective (short-circuit and interruption) with heating elements connected in parallel and residual current too high.