17
WIKA operating instructions, model GDM-RC-100
EN
14385258.01 04/2020 EN/DE
2. Example with two contacts as normally open: Contacts 1 and 2 should close when
values drops below threshold:
5.2.5 Closing the cable socket
■
Ensure that no moisture can enter at the cable end.
■
For this, make sure that the cable gland of the assembled case cover fits the
diameter of the cable used and that the cable gland is correctly seated.
■
Make sure that the seals are present and undamaged.
■
Tighten the cable gland with the torque specified in the specifications ( see chapter
9 “Specifications”) and check that the seal is correctly seated, in order to ensure the
ingress protection.
5.2.6 Limit values for the contact load with resistive load
Do not exceed the limit values.
The switching current must not be less than 10 mA with low voltages (12 V) for switching
reliability reasons.
Overcurrent protectors
The instruments do not provide for incorporated overcurrent protectors. Therefore,
overcurrent protection devices with the following nominal values must be used on the
system side:
■
Max. 5 A (at T
a
: -40 … +70 °C)
■
Max. 1 A (at T
a
: > 70 … 80 °C)
If overcurrent protection devices in accordance with EN 60127-2 or
equivalent are used, these must be selected with a high breaking capac-
ity (e.g. H1500A).
S2
S1
12 13 11 21 23 22 32 33 31 41 43 42
GDM-R
C-100
Terminal
Falling
closing
Falling
closing
Connection example - two contacts
Status of switching output: Not pressurised
5. Commissioning, operation
