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3. SIGNALS AND WIRING
(b) Output devices
Control
mode
Device Symbol
Connec-
tor pin
No.
Functions/Applications
I/O
division
P S T
Trouble
ALM
CN1-48 ALM turns off when power is switched off or the protective circuit is
activated to shut off the base circuit. Without alarm occurring, ALM
turns on within 1.5s after power-on.
DO-1
Dynamic brake
interlock
DB
When using the signal, make it usable by the setting of parameter
No.PD13 to PD18.
DB turns off simultaneously when the dynamic brake is operated.
When using the external dynamic brake on the servo amplifier of 11
kW or more, this device is required. (Refer to section 12.6)
For the servo amplifier of 7kw or less, it is not necessary to use this
device.
DO-1
Ready
RD
CN1-49 RD turns on when the servo is switched on and the servo amplifier is
ready to operate.
DO-1
In position
INP
INP turns on when the number of droop pulses is in the preset in-
position range. The in-position range can be changed using
parameter No. PA10.
When the in-position range is increased, may be kept connected
during low-speed rotation.
INP turns on when servo on turns on.
DO-1
Speed reached
SA
CN1-24
SA turns off when servo on (SON) turns off or the servomotor speed
has not reached the preset speed with both forward rotation start
(ST1) and reverse rotation start (ST2) turned off. SA turns on when
the servomotor speed has nearly reached the preset speed. When
the preset speed is 20r/min or less, SA always turns on.
DO-1
Limiting speed
VLC
VLC turns on when speed reaches the value limited using any of the
internal speed limits 1 to 7 (parameter No. PC05 to PC11) or the
analog speed limit (VLA) in the torque control mode. VLC turns off
when servo on (SON) turns off.
DO-1
Limiting torque
TLC
CN1-25
TLC turns on when the torque generated reaches the value set to the
Forward torque limit (parameter No. PA11), Reverse torque limit
(parameter No. PA12) or analog torque limit (TLA).
DO-1
Summary of Contents for MELSERVO MR-J3 A Series
Page 15: ...A 14 MEMO ...
Page 225: ...7 12 7 GENERAL GAIN ADJUSTMENT MEMO ...
Page 241: ...8 16 8 SPECIAL ADJUSTMENT FUNCTIONS MEMO ...
Page 251: ...9 10 9 TROUBLESHOOTING MEMO ...
Page 263: ...10 12 10 OUTLINE DRAWINGS MEMO ...