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14. OPTIONS AND AUXILIARY EQUIPMENT
14.3.3 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
17
5
EMG
DOCOM
DICOM
ALM
1
(Note 11)
NFB
MC
SK
MC
ON
OFFEMG
Servo motor
thermal relay
RA2
(Note 8)
(Note 1)
Power
supply
RA1
24VDC
RA1
N/
P/
BUE
SD
PR
B
C
A
SD
MSG
(Note 4)
(Note 7)
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
CN6
(Note 10)
(Note 11)
ALM
RA1
Note 1. For power supply specifications, refer to section 1.2.
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 14.11.
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 3.5kW, always disconnect P and D terminals.
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).
11. The diagram is for when outputting the trouble (ALM) is enabled by changing the parameter. When disabling to output the
trouble (ALM), configure the power supply circuit to turn off the magnetic contactor after detecting an alarm occurrence on the
controller side.