Dwyer SCD-PS - Manual (Page 2)

Model
SCD-PS
Item
Efficiency 78%~87% Typical at full load
Over Load / Short Circuit Protection Auto Recovery
Grounding
The diameter of grounding wire cannot be smaller than the wire diameter of terminals L and N
(All PLC units should be grounded directly to the ground pole).
Operation/Storage Environment
Operation: 0℃~55℃ (Temperature), 50~95% (Humidity), Pollution degree 2;
Storage: -25℃~70℃ (Temperature), 5~95% (Humidity)
Agency Approvals
Underwriters Laboratories, Inc.: UL508 Listed (Industrial Control Equipment)
European Community EMC Directive 89/336/EEC and Low Voltage Directive 73/23/EEC
Weight (g) 158
4 Installation and Wiring
4.1 Mounting Arrangements and Wiring
■ DIN Rail Installation
The SCD-PS can be secured to a cabinet by using the DIN rail that is 35mm
high with a depth of 7.5mm. When mounting the SCD-PS on the DIN rail, be
sure to use the end bracket to stop any side-to-side motion of the SCD-PS,
thus to reduce the chance of the wires being pulled loose. On the bottom of
the SCD-PS is a small retaining clip. To secure the SCD-PS to the DIN rail,
place it onto the rail and gently push up on the clip. To remove it, pull down
on the retaining clip and gently pull the SCD-PS away from the DIN rail.
Please see the figure on the right:
For heat dissipation. Make sure to
provide a minimum clearance of
50mm between the unit and all
sides of the cabinet. (as shown
below)
DVP MPU
> 50mm > 50mm
> 50mm
> 50mm
■ Wiring
To suit M3.5 screw terminals
Below 6.2
Below 6.2
Notes:
1. Please use O-type or Y-type terminals for I/O wiring terminals. The specification for the terminals is
as shown on the left. Tighten PLC terminal screws to a torque of 5~8 kg-cm (4.3~6.9 in-lbs).
2. Please avoid tiny metal material enter SCD-PS when screwing and wiring. After finishing wire,
remove the affix that pasted on the heat sink for heat dissipation.
3. Use Copper Conductors Only, 60℃.
4.2 Wiring Notes
■ Environment
1. DO NOT store the SCD-PS in a dusty, smoky, or corrosive atmosphere.
2. DO NOT store the SCD-PS in an environment with high temperature or high humidity.
3. DO NOT install PLC on a shelf or on an unstable surface.
■ Power Input Wiring
Power input of SCD-PS is AC input; following items should be noticed:
1. Connect the AC input (100VAC ~ 240VAC) to terminals L and N. Any AC110V or AC220V connected to the +24V terminal will
permanently damage the SCD-PS.
2. Please use wires of 1.6mm and above for the grounding.
3. If the power-cut time is less than 10ms, the SCD-PS still operates unaffectedly. If the power-cut time is too long, the SCD-PS will stop
operating and all the outputs will be Off.
5 Trial Run
☼ Power indicator, Running and Test
The “POWER” LED at the front of SCD-PS will be lit (in green) if the power is on. If the indicator is not ON, it indicates that the power
supply is not enough or short circuit. Please check your power wiring.
6 Troubleshooting
Judge the errors by the indicators on the front panel. When errors occurred on SCD-PS, please check:
☼ 「POWER」LED
The “POWER” LED at the front of the MPU will be lit (in green) if the power is on. If the indicator is not on when the MPU is powered up,
please check if power supply is normal. If the indicator is not on when the MPU is powered up and with the input power being normal, it is
an indication that the PLC is malfunction. Please have this machine replaced or have it repaired at a dealer near you.