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11. OPTIONS AND AUXILIARY EQUIPMENT
11.3.3 Connection example
POINT
Connecting PR terminal of the brake unit to P terminal of the servo amplifier
results in brake unit malfunction. Always connect the PR terminal of the brake
unit to the PR terminal of the resistor unit.
(1) Combination with FR-BR-(H) resistor unit
(a) When connecting a brake unit to a servo amplifier
NFB
RA1
24VDC
ALM
RA1
Servo motor
thermal relay
RA2
RA1
(Note 8)
(Note 1)
Power
supply
N/
P/
BUE
SD
PR
B
C
A
SD
MSG
(Note 4)
(Note 7)
3
10
EM1
DOCOM
DICOM
ALM
P
1
P2
P( )
N( )
C
FR-BU2-(H)
FR-BR-(H)
Servo amplifier
P
PR
TH2
TH1
(Note 6)
MC
(Note 5)
(Note 3)
(Note 2)
(Note 9)
L
1
L2
L
3
L
11
L21
20
15
CN3
(Note 10)
EM1
MC
SK
MC
ON
OFF
Controller
forced stop
RA3
Note 1. For power supply specifications, refer to section 1.3.
2. For the servo amplifier of 5k and 7kW, always disconnect the lead of built-in regenerative resistor, which is connected to the P
and C terminals. For the servo amplifier of 11k to 22kW, do not connect a supplied regenerative resistor to the P and C
terminals.
3. Always connect P
1 and P2 terminals (P1 and P for the servo amplifier of 11k to 22kW) (Factory-wired). When using the power
factor improving DC reactor, refer to section 11.13.
4. Connect the P/
and N/ terminals of the brake unit to a correct destination. Wrong connection results in servo amplifier and
brake unit malfunction.
5. For 400VAC class, a step-down transformer is required.
6. Contact rating: 1b contact, 110VAC_5A/220VAC_3A
Normal condition: TH1-TH2 is conducting. Abnormal condition: TH1-TH2 is not conducting.
7. Contact rating: 230VAC_0.3A/30VDC_0.3A
Normal condition: B-C is conducting/A-C is not conducting. Abnormal condition: B-C is not conducting/A-C is conducting.
8. For the servo amplifier of 11kW or more, connect the thermal relay censor of the servo amplifier.
9. Do not connect more than one cable to each P(
) to N( ) terminals of the servo amplifier.
10. Always connect BUE and SD terminals (Factory-wired).