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96M1274
Compact Switching Power Supply
MS2 Series
Instruction Manual
Read this manual before using the product in order to achieve maximum performance. Keep this manual in a safe place after reading it so that it can be used at any time.
Part Names and Functions
.8.8.8 |
Digital display window |
Displays the current values of output current/voltage and other items. |
Display mode selection (MODE)
Switches the display mode.
Output voltage adjustment trimmer (V.ADJ)
Adjusts the output voltage within the range of ±5%.
DC output terminal (+, –) *
A load is connected here. (24 VDC)
Protective earthing terminal (
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Connect to the protective earthing conductor in the building installation.
AC input terminal (N, L)
An input cable is connected here. (100 to 240 VAC)
*Only the MS2-H300 has DC output of 4-terminal.
Safety Precautions
Danger |
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Do not perform any electrical wiring while electric current is applied. Failure |
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to follow this may result in an electric shock or fire. |
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Be sure to connect the grounding cable. Failure to follow this may result |
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in an electric shock or fire. |
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• Do not touch this unit within 1 minute after AC input is turned off. Failure |
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to follow this may result in an electric shock. |
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Do not modify or repair this unit. Failure to follow this may result in an |
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electric shock, accident, or product failure. |
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Do not touch any terminal of this unit while electric current is applied. |
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Use the unit with the terminal cover installed to avoid an electric shock. |
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When this unit is used in a system that may cause a serious accident or |
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Warning |
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damage if the unit fails, be sure to install a safety device. |
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Pay attention to prevent foreign matter such as metal particles, dust, |
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paper or wood chips from entering the inside of this unit. Failure to |
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follow this may result in a fire or product failure. |
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Do not touch any metallic part while electric current is applied or |
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immediately after input is shut off. Failure to follow this may result in a |
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burn due to a high temperature. |
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If a failure or abnormality occurs while this unit is in use, immediately |
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such off AC input and stop operation of this unit . Failure to follow this |
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may result in a fire or accident. |
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Check that the AC input rated voltage of this unit is equal to the voltage |
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Caution |
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of the AC power supply. |
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•Do not connect the AC power supply to the DC output terminals.
•Do not disturb the convection of air near the vent of the casing.
■Precautions for CE Markings
KEYENCE has evaluated the conformity of the MS2 Series with the requirements of the EMC Directives and Low-voltage Directives under the following condition, and confirmed that the MS2 Series meets these requirements. For the Low-voltage Directives, the MS2 Series has obtained certification from TUV Rheinland for the following standards.
<Precautions>
● EMC Directives (2004/108/EC)
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Applicable standard (EMI) |
EN55011, Group 1, Class A |
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Applicable standard (EMS) |
EN61000-6-2 |
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● Low-voltage Directives (2006/95/EC) |
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Applicable standard |
EN60950-1 |
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EN50178 |
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Overvoltage category |
II |
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Pollution degree |
2 |
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•The MS2 Series is designed as a Class I Equipment. Be sure to connect the protective earthing terminal on the terminal block to the protective earthing conductor in the building installation.
•The MS2 Series is an open-type device. Be sure to install it in an appropriate enclosure rated as IP54 or better.
•Use the MS2 Series according to the derating conditions and the installation conditions described in this manual.
•The MS2 Series does not include a disconnecting device. Be sure to install a disconnecting device such as a circuit breaker in the building installation wiring.
■ Precautions for UL Standards
The MS2 Series meets the following UL standards and has obtained UL and C-UL certification.
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Applicable standard |
UL508 |
Industrial Control Equipment |
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UL60950-1 Information Technology Equipment - Safety |
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CAN/CSA C22.2 No. 14-M95 |
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Industrial Control Equipment |
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CAN/CSA C22.2 No. 60950-1-03 |
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Information Technology Equipment - Safety |
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UL File No. |
E195940, E242533 |
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UL category |
NMTR, NMTR7 / QQGQ2, QQGQ8 |
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<Precautions> |
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Use wires that meet the following conditions for the terminal block. |
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(tightening torque : 1.2 N·m) |
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Wire range |
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AWG#14-22 |
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Wire Material |
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Copper wire only |
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Wire type |
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Stranded wire only |
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Temperature rating |
60ºC/75ºC |
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•The MS2 Series is designed as a Class I Equipment. Be sure to connect the protective earthing terminal on the terminal block to the protective earthing conductor in the building installation.
•The MS2 Series is an open-type device. Be sure to install it in an appropriate enclosure rated as IP54 or better.
•Use the MS2 Series according to the derating conditions and the installation conditions described in this manual.
•The MS2 Series does not include a disconnecting device. Be sure to install a disconnecting device such as a circuit breaker in the building installation wiring.
•The output of the MS2-H50 is rated Class 2 output specified in NFPA70 (NEC: National Electrical Code) in the U.S.A. (UL Category: EPBU2/EPBU8)
Installation Conditions
■ Installation environment
•Installation this unit indoors.
•Do not install this unit in locations exposed to direct sunlight.
•Do not install this unit in locations in which there is corrosive gas or flammable gas.
•Do not install this unit in locations exposed to a lot of dust, soot, or steam.
•Do not install this unit in locations in which water, oil, or chemicals may splash onto the unit.
•When installing this unit in a location subject to vibration or impact, consider the vibration proof mounting.
■ When installing this unit in a control console
•The ambient temperature for this unit should not exceed the upper temperature limit (refer to the derating characteristic). When the upper temperature limit may be exceeded, install a cooling fan or cooler so that the ambient temperature is below the upper temperature limit.
•Leave a sufficient ventilation space around this unit for head dissipation.
•Do not install this unit just above a device with high head generation (transformer, inverter, servo amplifier, etc.).
Installation
■ Space around the unit
The MS2 Series uses natural air-cooling. To ensure sufficient convection of air to dissipate heat, provide enough space between the MS2 Series and the control panel or other nearby devices as shown below.
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MS2-H50/H75/H100/H150 |
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MS2-H300 |
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20mm min. |
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60mm min. |
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20mm min. |
20mm min. |
30mm min. |
30mm |
min. |
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20mm min. |
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30mm min. |
■ Installation orientation
Install this unit with the base A down as shown below. Do not install the unit in any other orientation.
■ Mounting bracket (optional)
Make sure that the tightening torque for the mounting screw holes of this unit is 0.5 N•m or less.
Wiring
Terminals
Screw size |
Tightening torque |
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M4 |
1.2 N•m |
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Crimp termianls
M4 size |
M4 size |
8.0 mm max. |
8.0 mm max. |
Cables
Select cables with a wire diameter suited to the output rated current.
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