Acromag, Inc. Tel: 248-295-0880
- 11 -
Model SP33X-0700
4-Wire DC I/V Signal Splitter w/USB
Power Connections…
CAUTION: Risk of Electric Shock
–
More than one disconnect switch may be
required to de-energize this equipment before servicing.
IMPORTANT
–
External Fuse:
If unit is powered from a supply capable of delivering
more than 2.5A to the unit, it is recommended that this current be limited via a high
surge tolerant fuse rated for a maximum current of 2.5A or less (for example, see
Bel Fuse MJS or RJS fuse types).
Optional Bus Power Connections
Power is normally wired to the TB5 terminals of the unit as shown on the previous
page. However, this device is equipped to be optionally or redundantly powered via
a DIN rail bus connector (Acromag 1005-063) mated to an optional plug-in terminal
block (Acromag 1005-220 or 1005-221, depending on left side or right-side wire
entry). Any power input via the bus connector is diode-coupled to the same point in
the circuit as unit power connected at power terminal TB5. You could power
multiple units by snapping them together along the DIN rail bus using connector
1005-063, then connecting a mating terminal block (select a left side or right-side
connector, see figure below). While the intent of the bus power connector is to
allow several units to conveniently share a single supply, you could also use the bus
power connector to redundantly power units (with local power also applied at TB5),
allowing a backup supply to maintain power to the units should the main supply at
TB5 fail.
Acromag TTBUS-KIT connector kit contains bus connector 1005-063, plus left-side
terminal 1005-220, and right-side terminal 1005-221, allowing units to snap
together, side-by-side, along the DIN rail and share the power connection.
Important
–
End Stops:
If this module uses the optionally powered (or redundantly
powered) via the DIN rail bus for hazardous location installations (Class I, Division 2
or ATEX Zone 2) it should use two end stops (like Acromag 1027-222) to secure the
terminal block and module (not shown).
!