2. SIGNALS AND WIRING
2 - 15
(3) Output signal
Device
Symbol
Connector
pin No.
Function and application
I/O
division
Control
mode
CP PS
Encoder A-phase
pulse
(differential line
driver)
LA
LAR
CN3-11
CN3-24
These devices output pulses of encoder output pulse set in [Pr. PA15] in
the differential line driver type.
In CCW rotation of the servo motor, the encoder B-phase pulse lags the
encoder A-phase pulse by a phase angle of π/2.
The relation between rotation direction and phase difference of the A-
phase and B-phase pulses can be changed with [Pr. PC19].
DO-2
Encoder B-phase
pulse
(differential line
driver)
LB
LBR
CN3-12
CN3-25
Encoder Z-phase
pulse
(differential line
driver)
LZ
LZR
CN3-13
CN3-26
The encoder zero-point signal is outputted in the differential line driver
type. One pulse is outputted per servo motor revolution. This turns on
when the zero-point position is reached. (negative logic)
The minimum pulse width is about 400 μs. For home position return using
this pulse, set the creep speed to 100 r/min or less.
DO-2
Encoder Z-phase
pulse
(open-collector)
OP
The encoder zero-point signal is outputted in the open-collector type.
When using the signal, enable OP with [Pr. PD38].
DO-2
2.4 Power-on sequence
POINT
The output signal, etc. may be unstable at power-on.
(1) Power-on procedure
1) Always wire the power supply as shown in above section 3.1 of "MR-JE-_C Servo Amplifier
Instruction Manual" using the magnetic contactor with the power supply (L1/L2/L3). Configure up
an external sequence to switch off the magnetic contactor as soon as an alarm occurs.
2) The servo amplifier receives the servo-on command in 4 s to 5 s + network initial communication
time after the power supply is switched on.
(Refer to (2) in this section.)
(2) Timing chart
(4 s to 5 s + network initial communication time)
95 ms
10 ms
95 ms
Servo-on command accepted
Base circuit
Servo-on command
(from controller)
Power supply
ON
OFF
ON
OFF
ON
OFF
Summary of Contents for MR-JE-C
Page 33: ...2 SIGNALS AND WIRING 2 16 MEMO ...
Page 37: ...3 STARTUP 3 4 MEMO ...
Page 129: ...6 HOMING MODE 6 36 MEMO ...
Page 169: ...7 HOW TO USE THE POINT TABLE 7 40 MEMO ...
Page 203: ...9 HOW TO USE JOG MODE 9 12 MEMO ...
Page 215: ...11 APPLICATION OF FUNCTIONS 11 8 MEMO ...
Page 307: ...12 WHEN USING WITH A GENERAL PURPOSE INTERFACE 12 92 MEMO ...
Page 309: ...MEMO ...