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Chapter 2 Wiring and Connection
2-24
2-6 Connection of regenerative resistor
The servo amplifier has an internal regenerative resistor electronic thermal (software process), and
when overheating of the regenerative resistor is detected, an over-regeneration (alarm 30) is detected.
The parameters must be set correctly for the electronic thermal to operate correctly.
Refer to section "6-1-1 Combinations with servo amplifiers" for details on the combination of
parameter settings, external option regenerative resistor and servo amplifier capacity.
CAUTION
The parameters must be set to the regenerative resistor in use for the
electronic thermal to operate correctly.
2-6-1 Connection of standard built-in regenerative resistor
The built-in regenerative resistor is connected by short-circuiting between the P and D terminals of the
control circuit terminal block (TE2). (Shipment state). Confirm that a short bar has been connected
between the P and D terminals.
CAUTION
The MDS-B-SVJ2-01 does not have a built-in regenerative resistor. If the load
inertia is small, there will be no problem with the capacitor regeneration
(regenerative resistance is not required as the circuit is charged with the
capacitor in the amplifier). However, the overvoltage alarm (ALM33) will occur if
the load inertia is large. In this case, connect the external option regenerative
resistor. Refer to section "11-4 Selection of regenerative resistor" for details on
making a selection.
MDS-B-SVJ2
TE2
P
C
D
Built-in
regenerative
resistor
Confirm that a short bar has been connected
between the P and D terminals
(Note)
The terminal block TE2 is on the top front of the
amplifier in the MDS-B-SVJ2-10 and -20.
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