Menu sequence and structure •
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3110086 EHC20 UK 110515
6.2.3b Technical data – PWM and 0-10 V
PWM: 20% to 100%, 1 kHz
Designed for a 10 k ohm load
resistance
PWM technical data:
0-10 V technical data:
0-10 V: 2 V to 10 V (20% to 100%)
Designed for a 10 k ohm load resistance.
10 V = 100% rotational speed
5 V = 50% rotational speed
2 V = 20% rotational speed
0 V = Off
6.2.4 Purging time
During this time, the pump runs at full speed (100%) in order to ensure a reliable start-up. Only after this purging time
will the pump run at a controlled speed and switch to the max. or min. speed depending on the mode set.
The purging time cannot be used with 0-10 V / PWM pumps.
Setting range: 5 to 600 seconds / default: 8 seconds
6.2.5 Control time
The control time is used to determine the latency of rotational speed control in order to minimise temperature
fluctuations. The time span required for a complete control cycle from minimum to maximum speed is specified here.
Setting range: 1 to 15 minutes / default: 4 minutes
6.2.6 Max. rotational speed
The maximum rotational speed of the pump is specified here. During the setting procedure, the pump runs at the
relevant speed and the throughflow can be determined.
Setting range: 70% to 100% / default: 100%
If you select this menu, you may be prompted to save the rotational speed settings.
6.2.7 Min. rotational speed
The minimum rotational speed of the pump is specified here. During the setting procedure, the pump runs at the
relevant speed and the throughflow can be determined.
Setting range: (”6.2.3.9 Rotational speed when ”On”, page 52) to max. rotational speed -5% / default: 30%
The percentages are guide values that may vary to a greater or lesser extent depending on the
system, pump and pumping level. 100% is the maximum possible controller voltage/frequency.
