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3. SIGNALS AND WIRING
(b) Output devices
Device Symbol
Connec-
tor pin
No.
Functions/Applications
I/O
division
Control
mode
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 1s after power-on.
DO-1
Dynamic brake
interlock
DB When using the signal, make it usable by the setting of parameter
No.PD13 to PD16 and PD18.
DB turns off when the dynamic brake needs to operate. 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 CN1-24 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 SA turns on when the servo motor speed has nearly reached the
preset speed. When the preset speed is 20r/min or less, SA always
turns on. SA does not turn on even when the servo on (SON) is
turned off or the servo motor speed by the external force reaches
the preset speed while both the forward rotation start (ST1) and the
reverse rotation start (ST2) are off.
DO-1
Limiting speed VLC CN1-25 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 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