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STUDER INNOTEC HP-COMPACT
User manual HP-COMPACT V3.0 E 18
When the Input voltages reach the selected value on turning knob, the inverter switches off
and the AC INPUT goes directly on the AC OUTPUT. When the voltage INPUT is less of
20V the value set, the transfer is stopped and the OUTPUT switches back on the inverter.
Don’t use the turning knobs “TRANSFER” (23) to adjust the AC OUTPUT voltage !
This is only it’s only a voltage threshold level to enable or disable the transfer.
4.7.2 FAST (UPS)- MODE for the Transfer Switch
The quick and break free Transfer mode is programmed with a slide switch „Transfer De-
lay“ OFF, which is on the front side (cable connections side).
The aim of the HP-COMPACT is to supply the appliance with a break-free alternating volt-
age. When the incoming voltage AC IN no longer matches values which have been set
with the Turning Knob 23, the Inverter switches on at once. The transfer is carried out in
0.02 seconds. This quick transfer ensures a break-free function for most appliances. If you
have an alternating voltage back at the input AC IN, transfer system starts up again with-
out any break, and the inverter is stopped.
4.7.3 Delayed mode of the Transfer System
The delayed mode of the transfer system „Transfer Delay ON“ is programmed with the
slide switch on front with the cable connections. The HP-COMPACT provides a break-free
alternating voltage for the appliance. A quick transfer switch is not always sensitive nor is it
always desired. For example, when the appliances are operated by a small back-up ge-
nerator. An overload of a short period on such a generator, i.e. start of a vacuum cleaner
etc., has the effect of decreasing the voltage for a short time. As in such cases the transfer
to the Inverter is not desired, the transfer system can be programmed with a delay. When
the slide switch (Transfer delay) is in the „On“ position, the transfer to the inverter takes
place with a delay of 5 seconds. If the voltage falls below 100Vac, the transfer takes place
without delay ! The transfer switching to the Inverter takes place without any break.
4.8 The Multifunctional Contact
In the HP-COMPACT there is a built-in programmable power relay. The potential-free
change-over contact (NO – NC) of this power relay is connected to the screw terminal
AUX CONTACT.
Maximum Contact load: 230Vac / 12Vdc / 24Vdc / 16A !
> 36Vdc / 3A !
With the Push Button 21 „AUXILIARY CONTACT“ the contact can be manually switched
on or off independently from programming and from the operating situation. The LED 5
“Contact active” shows the status of the contact. The drawing up the screw terminal “AUX
CONTACT” is the inactive position mode, LED 5 “Contact active” off.
The switching on and off of this contact can be freely programmed for every operating
situation of the HP-COMPACT witch situation is indicated with a LED. There is no
limitation to its application and it is left to your wishes as to where and how you would like
to use it. The example and the setting of this contact are explained in chapter 5.4.2.
In factory we program this for a disfunctioning alarm. The contact is active when one of
these situations is detected:
Over temperature (LED 10 lit)
Overload (LED 11 lit)
Over or less voltage of batteries (LED 12 lit or blinking)
HP-COMPACT is turned off manually or with a fault (LED 13 lit)
In case this function is not wished, it must be modified by programming according to pro-
cedure in chap. 5.4.