Filter
Top Products
2468CB & 2468CD Dual Power Supply Version Hydrastep 2468CB and 2468CD Manual
2-14 24685034
6. With power disconnected release voltage selection plug PL9 by squeezing lugs. Insert
appropriate selector plug.
7. Remove fuse and fit 200mA ceramic anti-surge fuse for 240Vac nominal and 400mA
ceramic anti-surge fuse for 110Vac nominal.
The Hydrastep 2468C unit must be earthed via the protective earth terminal (stud) on
the enclosure. The cable or braid used to attach the unit to the protective earth must
be capable of carrying a current of at least 10A. No disconnecting device should be
fitted to the protective earth conductor.
TRANSFORMER
Fuse
LN
Voltage Selection Plug
(Set to 110V)
TRANSFORMER
Fuse
LN
Voltage Selection Plug
(Set to 240V)
(A) 240V (B) 110V
Figure 2.4: Voltage Selection (240V or 110V)
DC Powered Units (input board 24680516)
A shielded power cable, and shielded signal cables with the connection to the unit through
RF glands mounted on the gland plate should be used for all units that need to comply with
the requirements of the European EMC Directive. The supply is connected to the unit in the
same way as for the AC version. A ferrite (supplied) must be attached inside the enclosure
for each DC inlet (with a double-turn). The DC inlet must not be shared by signal wiring for
any other purpose. Route the supply wires in twisted pairs as described in the AC section.
The DC supply must be either negative earth of fully isolated from plant ground
1. Positive (+Vs) is connected to the terminal marked L.
2. Negative (-Vs) is connected to the terminal marked N.
3. A separate ground wire is required which must be connected to the earth stud on the
enclosure.
4. For a non-isolated supply, the maximum difference between the plant earth at the water
column and the -Vs supply is 7V.
5. Use a good quality RF cable gland, and ensure there is a good annular (ring shape)
connection with the screen.
The Hydrastep 2468C unit must be earthed via the protective earth terminal (stud) on
the enclosure. The cable or braid used to attach the unit to the protective earth must
be capable of carrying a current of at least 10A. No disconnecting device should be
fitted to the protective earth conductor.