WIKA DPS40 - Manual (Page 18)

GB
WIKA operating instructions DELTA-plus, DELTA-comb and DELTA-switch 18
14093265.01 03/2014 GB/D/F/E
6. Commissioning, operation
Safety instructions for installation
■ Follow the installation and safety instructions within the
operating instructions.
■ Install instruments in accordance with the manufacturer's
instructions and the valid standards and regulations.
■ The instruments do not provide for incorporated overcurrent protectors!
■ In order to prevent the contacts from welding through overload, suitable
protection systems must be implemented by the operator!
■ Only connect circuits with the same voltage and type of protection to the
switch contacts and connecting cables.
■ Limit the maximum current, using external measures, to a value of ≤ 5 A per
circuit.
■ Size the connecting cables for the largest current strength in the circuits.
Precise wiring schemes can be seen in the following connection diagram. In
addition both the pin assignment and the required power supply are stated on the
product label of the case circumference.
Electrical connection via:
■ Cable gland and cable
1st
contact
2nd contact
■ Cable socket or angular connector
per DIN 43651
2nd contact
1st contact
Cable terminal box
Information
For the safety circuit, which will switch off the heating if the
steam generator falls below the minimum flow, only the normally
open contact of the changeover switch should be connected (i.e.
with Δp = 0 open circuit)!