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12. OPTIONS AND AUXILIARY EQUIPMENT
12.3.3 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
P( )
N( )
MCNFB
RA1
ALM
Servo motor
thermal relay
RA2
(Note 8)
(Note 1)
Power
supply
N/
P/
BUE
SD
PR
B
C
A
SD
MSG
(Note 4)
(Note 7)
P1
P
2
C
FR-BU2-(H)
FR-BR-(H)
Servo amplifier
P
PR
TH2
TH1
(Note 6)
(Note 5)
(Note 3)
(Note 2)
(Note 9)
L1
L
2
L
3
L
11
L
21
(Note 10)
CN1
21
DICOM
48 ALM
20
DICOM
46
DOCOM
42 EMG
15 SON
Plate SD
24VDC
RA1
(Note 11)
OFF
MC
ON
MC
Emergency
stop
(Note 11)
SK
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 12.13. Use only one of power factor improving DC reactor or power factor
improving AC reactor.
4. Connect the P/
and N/ terminals of the brake unit to a correct destination. Incorrect 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(
) and N( ) terminals of the servo amplifier.
10. Always connect BUE and SD terminals (Factory-wired).
11. Configure the circuit to shut down the main circuit power supply simultaneously with the turn off of emergency stop (EMG)
using the external sequence.