Omron R88D-GT series User Manual

6-16
6-4 Setting the Mode
6
Operation
 Reason for No Rotation Display (Front Panel Operation)
A number is displayed to indicate the reason the Servomotor does not rotate.
Note The Servomotor may rotate even if a reason number other than 0 is displayed.
No. Reason
Relevant
control
modes
Description
Flash-
ing
Error or warning has
occurred
All An error or warning has occurred.
0
No reason All
No reason has been detected. The motor operation should be
possible.
1
Main power supply
interrupted
All
The main power supply to the Servo Drive is not turned ON.
2 No RUN input All
The RUN command is not connected to COM.
3
Drive prohibit input is
enabled
All
When Pn04 = 0 (drive prohibit input enabled):
 The Forward Drive Prohibit Input (POT) is open and the speed
command is in the forward direction.
 The Reverse Drive Prohibit Input (NOT) is open and the speed
command is in the reverse direction.
4 Low torque limit All
The currently effective torque limit, Pn5E (No. 1 Torque Limit) or Pn5F
(
No. 2 Torque Limit), is less than 5% of the rated torque.
5
Analog torque limit
input is enabled
P, S
When Pn03=0 (analog torque limit input):
 The forward analog torque limit input is negative and the speed
command is in the forward direction.
 The reverse analog torque limit input is positive and the speed
command is in the reverse direction.
6 IPG input is disabled
P
Pn43 = 0 (Command Pulse Prohibited Input Enabled) and the IPG input
is open.
7
Frequency of
command pulse input
is low
P
The position command per control cycle is 1 pulse or less and the
following are some of the possible causes.
 The command pulse is not input correctly.
 The input specified in Pn40 is not connected correctly.
 The type of input specified in Pn41 or Pn42 is not correct.
8
ECRST input is
enabled
P
Pn4E = 0 (Clear deviation counter when signal is closed for 100 μs or
longer) and the deviation counter reset input (ECRST) is connected
to COM.
9
VZERO input is
enabled
S, T
Pn06 = 1 (zero-speed designation input enabled) and the Zero-speed
Designation Input (VZERO) is open.
10
External speed
command is low
S
The analog speed command is 0.06 V or smaller when the analog
speed command is selected.
11
Internal speed
command is zero
S
The internal speed command is 30 r/min or less when the internal
speed command is selected.
12
Torque command is
low
T
The analog torque command input (REF or PCL) is 5% or less of the
rated torque.
13 Speed limit is low T
 Pn5B = 0 (limit speed with No. 4 Internally Set Speed) and the No. 4
Internally Set Speed (Pn56) is
30 r/min or lower.
 Pn5B = 1 (limit speed with REF input) and the analog speed command
input (REF) is 0.06 V or lower.
14 Other All
Reasons 1 to 13 do not apply, but the motor is rotating at 20 r/min or
lower. (Command is low, load is heavy, load is locked, load has hit
something, Servo Drive is faulty, Servomotor is faulty, etc.)
: Position control
Control mode Reason number
: Torque control
: Speed control

Omron R88D-GT series Specifications

General

Brand	Omron
Model	R88D-GT series
Category	Controller
Language	English