6 OPTIONS AND PERIPHERAL EQUIPMENT
6.3 MR-CM simple converter
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6
6.3 MR-CM simple converter
Combination of simple converter and servo amplifier
Selection method
Select a servo amplifier for connection that meets the following conditions.
• Connectable servo amplifier models
MR-J5-10_ to MR-J5-200_, MR-J5W2-22G_ to MR-J5W2-1010G_, MR-J5W3-222G_/MR-J5W3-444G_
• The sum of rated capacities of connected servo amplifiers [kW] 3 kW (MR-CM3K rated output)
For multi-axis servo amplifiers, the calculation uses the sum of the rated capacities of all axes as the rated capacity of one
servo amplifier.
• Number of connectable servo amplifiers to one MR-CM3K 6
A multi-axis servo amplifier is counted as one servo amplifier unit, rather than the number of axes.
Servo amplifier setting when using a simple converter
When using a simple converter, set [Pr. PA02.4] of the servo amplifier connected in the latter stage to "1" (simple converter is
used). If the simple converter is used without setting [Pr. PA02.4], unexpected alarms may occur.
The simple converter and the external regenerative option connected to the servo amplifier can be used together. To use an
external regenerative option, set [Pr. PA02.0-1]. Note that the simple converter does not have a regenerative function. Also,
an external regenerative option cannot be connected to the simple converter.
Simple converter standard specifications
*1 The value when a 3-phase power supply input is used
Model MR-CM3K
Converter output Rated voltage 270 V DC to 324 V DC
Rated current 20 A
*1
Main circuit power supply
input
Voltage/Frequency 3-phase 200 V AC to 240 V AC, 50/60 Hz
Rated current 16 A
*1
Permissible voltage fluctuation 3-phase 170 V AC to 264 V AC
Overheat detection
function
Thermal sensor The contact between TH1 and TH2 opens if abnormal overheating occurs.
Contact
specifications
Maximum voltage 110 V AC/DC
Maximum current 0.3 A/20 V DC
Minimum current 0.1 mA/1 V DC
Maximum capacity 6 VA
Applicable servo amplifier MR-J5-10_ to MR-J5-200_
MR-J5W2-22G_ to MR-J5W2-1010G_
MR-J5W3-222G_, MR-J5W3-444G_
Maximum number of connectable servo amplifiers 6
Total capacity of connectable servo amplifiers 3 kW
Continuous rating 3 kW
Instantaneous maximum rating 9 kW
IP rating IP20
Close mounting 3-phase power supply input Possible
Mass 0.7 kg
Wire size L1/L2/L3/PE 2 mm
2
to 3.5 mm
2
(AWG 14 to 12)
P4/N- 2 mm
2
to 3.5 mm
2
(AWG 14 to 12)
Total wiring length from P4/N- of simple converter to P4/N- of servo
amplifier
5 m or less
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