Moxa Technologies DR-120 Series Manual

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DR-120 Series
Hardware Installation Guide
First Edition, July 2015
Dimensions
Terminal Pin No. Assignments (TB1)
PIN No.
Assignment
1
FG
2
AC/N (DC+)
3
AC/L (DC-)
Terminal Pin No. Assignments (TB2)
PIN No.
Assignment
1, 2
DC Output V+
3, 4
DC Output V-
Mounting Instructions
Mounting: Mount only as shown in figure, with input terminals
facing downwards to allow sufficient cooling.
Admissible DIN rails: TS35/7.5 or TS35/15.
To attach the DR-120 to the rail:
1. Rotate the DR-120 backwards, as shown in the figure.
2. Fit the top of the DR-120 over the top hat rail.
3. Slide the DR-120 downwards until it hits the stop.
4. Push the bottom of the DR-120 forward until it snaps into
place.
5. Move the DR-120 back and forth to make sure it is locked in
place.
Installation
1. To prevent the unit from overheating, always allow sufficient
clearance around the unit for proper ventilation: 5 mm left and
right, 40 mm above, and 20 mm below. You should also keep
a 10 to 15 cm clearance from adjacent devices that act as a
heat source.
2. The appropriate mounting orientation is vertical, with input
terminals on the bottom and output on the top of the DR-120.
Other mounting orientations, such as upside down, horizontal,
or table-top, are not allowed.
3. Use copper wire only; the recommended wiring is shown
below.
AWG
18
16
14
12
10
Rated Current
(Amps)
6 6-10 13-16 16-25 25-32
Lead
cross-section
(mm
2
)
0.75 1.00 1.5 2.5 4
Note:
When 5 or more wires are connected to the unit, the current
carried by each wire could be 20% less than the current
listed
above.
Make sure that all strands of each wire are properly inserted
into the terminal connection, and that the screw terminals are
securely fixed to prevent poor contact. If the power supply has
multiple output terminals, make sure each contact is
connected to wires to prevent stress on a single contact from
too much current.
4. Use wire that can withstand temperatures of at least 80°C,
such as UL1007.
5. Suggested fuses and the maximum number of the PSUs that
can be connected to a circuit breaker at 230 V are shown as
below:
Model Fuse
Circuit breakers
C16
D16
DR-120
F4A/H250W
5
7
6. The recommended wire strapping length is 5 mm (0.197 inch).
7. Use a slotted type 4 mm screwdriver.
8. Use the following torque settings for terminals:
Model
I/P
O/P
DR-120
10 kgf-cm (9 in-lb)
10 kgf-cm (9 in-lb)

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2015 Moxa Inc. All rights reserved.
Important Safety Precautions
Before working with a power supply, be sure to read and
understand these instructions carefully and completely. You
should also follow any notes or instructions on the unit itself.
1. Risk of electrical shock and energy Hazard: If the device
fails, it must be examined by a qualified technician. Do not
remove the DIN-rail power supply casing yourself.
2. Risk of electric arcs and electric shock (danger to life):
Do not connect the primary and secondary sides together,
since doing so could result in life threatening shocks.
3. Risk of burn hazard: Do not touch the unit while it is in
operation or shortly after it has been disconnected.
4. Risk of fire and short circuits: Openings on the product
should be protected from foreign objects and dripping liquids.
5. Pollution level: Only install the unit in a pollution level degree
2 environment.
6. Humidity warning: Do not install the unit in locations with
high humidity, or near water.
7. The maximum operating temperature for the DR-120 is:
Model
Temperature
DR-120
45°C
8. The FG ( ) must be connected to PE (Protective Earth).
9. Output current and output wattage must not exceed the rated
values in the product’s specifications.
10. Before doing any installation, maintenance, or modification
work, disconnect the system from the power source. Make
sure that inadvertent connection in circuit will be impossible!
11. For continued protection against risk of fire, replace only with
fuses of the same type and rating.