Functions
9.3 Power output control
SIPLUS HCS4200 PROFINET/PROFIBUS DP
Operating Instructions, 07/2019, A5E35066204A/006
137
9.3.4
Switch on heating
Switch on heating
To control and diagnose the power outputs, the heating must first be activated. This is done
via the cyclic data.
Heating status
Description
On
Channels are activated
Off
Channels are deactivated.
Time-delayed channel start-up when switching on heating
To reduce the load on the supply system to a minimum, the power outputs are always
switched on in sequence upon start-up. The sequence is as follows:
1 The user has specified the field setpoints and the channel setpoints
2 The user activates the required operating mode
3 The user switches the heating "On"
4 Several POMs are activated with a time offset in ascending slot order
5 Within each POM, the channels of a phase are also started in sequence.
Depending on the configuration, the overall startup can take up to 3 seconds.
If channels are switched off during operation (setpoint 0%) and then on again, switch-on
takes place immediately.
9.3.5
Soft start during heater operation
If a channel is switched off during operation (setpoint 0 %) and then on again, this switch-on
can take place via soft start if configured accordingly.
9.3.6
Channel control via setpoints
It is possible to control the channels using only the setpoints in the cyclic data. In this mode,
it is not necessary to combine channels into fields and to assign field setpoints.
The operating mode setting in the cyclic data (production, standby) is not relevant in this
case.
Summary of Contents for SIPLUS HCS Series
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