Model DT335-0700
Dual RTD/Resistance Input Transmitter w/USB
Acromag, Inc. Tel: 248-295-0880
- 10 -
http://www.acromag.com
- 10 -
https://www.acromag.com
Power Connections
The power terminals are reverse
polarity protected.
IMPORTANT
–
External Fuse:
If this
unit is powered from a supply
capable of delivering more than 3A
to the unit, it is recommended that
potential fault current be limited
via a high surge tolerant fuse rated
for a maximum current less than 3A
(for example, see Bel Fuse MJS or
RJS fuse types).
The unit is powered from 6-32V DC (36V DC peak) by connecting power as shown
below. This transmitter can be optionally powered (or redundantly powered) via
the DIN rail bus when coupled to an optional DIN rail bus connector (Acromag
Model 1005-063) with a bus terminal block (Acromag 1005-220 or 1005-221). This
optional power connection method can allow several dual channel modules to
share a single power supply connection without wiring power to each
unit’s
power
terminals.
•
Power connections are isolated from each input and each output. The supply
voltage should be from 6-32V DC. This voltage must never exceed 36V DC
peak, or damage to the unit may result.
•
Variations in power supply voltage between the minimum required and 32V
maximum, has negligible effect on transmitter accuracy.
•
Note the placement of earth ground at power. The power cable shield and DC-
should ideally be grounded closest to the module. The input and output circuit
commons are capacitively coupled to earth ground at DC- through high-
voltage isolation capacitors, offering some protection if their circuits happen
to float relative to power (not recommended).
CAUTION: Risk of Electric Shock
–
More than one disconnect switch may be
required to de-energize this equipment before servicing.
