Electrical Connection - Sika induQ VMI Serie Betriebsanleitung

Electrical connection

5 Electrical connection
The electrical connection of the VMI is made via the 5-pin plug M12x1 on the top of the hous-
ing.
The wiring of the VMI depends on the version ordered. A distinction is made between fre-
quency and analogue output, as well as basic and optional wiring.
CAUTION
The electrical connection should only be carried out by a fully qualified electrician.
 De-energize the electrical system before connecting the VMI.
FIRE HAZARD DUE TO OVERHEATING OF THE DEVICE
Exceeding the specified limits will cause damage to the electronics. Without current
limiting, there is a fire hazard due to overheating of the device.
 Connect the VMI only to a power source with limited power.
FOR USE ON SHIPS OR OTHER MARITIME EQUIPMENT

induQ / VMI devices do not offer isolation between Frame Ground (FG/PE) and
Signal Ground (GND/0V).
24 VDC power needs to be supplied via a Safety Extra Low Voltage (SELV) and
Limited Energy Circuit or SELV and Class II (double insulated) DC power supply.
Pulse and current signals coming from our device may only get connected to gal-
vanic insulated input ports.
Optional wirings
Depending on the version, an analogue output can be optionally connected.
Connecting cable
Suitable connection cables with moulded coupling socket are available in various lengths in-
cluded in the range of SIKA accessories. The shielding is already connected with the knurled
nut. The maximum length of the connecting cable is 30 m.
SHIELDING REQUIRED
 Use only shielded connection cables.
 The shield of the connection cable
should not be connected to earth.
We recommend to earth the pipes directly before and
behind the VMI ( Figure).
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— Series VMI
© SIKA • Ba_VMI • 10/2020