Servo Driver Warnings - Omron CS1W-MCH71 Operation Manual

Servo Driver Warnings

11-8 Servo Driver Warnings
Display Name
A.91 Overload
A.92 Regenerative
overload
A.94 Data setting
warning
A.95 Command warn-
ing
A.96 Communica-
tions warning
The W-series Servo Drivers provide various warnings. The warning, causes,
and corrections are given in the following table.
This warning is given before an overload alarm (A.71 or A.72) is reached. An alarm is likely
to occur if operation is continued without any changes. Check the load to see if it is suitable.
This warning is given before a regeneration overload alarm (A.32) is reached. An alarm is
likely to occur if operation is continued without any changes. Check the load to see if it is
suitable.
A setting was made out of range using MECHATROLINK-II communications. Check the data
number and data setting range specified with the PARAM command or the Support Tool run-
ning on a computer.
It is possible that settings for the Servo Driver parameter, option monitor, are incorrect.For a
W-series Servo Driver, check that Pn813 = 0032 (hex). For a Servo Driver with built-in com-
munications, check that Pn824 = 0023 (hex) and Pn825 = 0024 (hex). If they are not, correct
the values.
The command received via MECHATROLINK-II communications could not be executed
under the current conditions. This warning will occur under conditions like the following:
• An attempt was made to lock the servo when the Servo Driver's main circuit was OFF.
• An attempt was made to read or write Servo Driver parameters using CX-Motion-MCH
while communications were in progress for the Digital Operator or W-Mon.
• The same station address (node address) is set for more than one node.
• Power to the main circuit was turned OFF during positioning.
A communications error has occurred. If a communications warning occurs twice consecu-
tively, a communications alarm (A.E6) will occur. This warning will occur under conditions
like the following:
• The same station address (node address) is set for more than one node.
• Vibration, Shock, or Peripheral Device Noise
Take the following countermeasures against vibration, shock, and peripheral device noise.
Vibration/Shock Countermeasures
• Make sure the communications connector is inserted properly.
• Check for vibration and shock in the equipment or peripheral devices when A.96 occurs. If
there is any suspect vibration or shock, take measures in the equipment so that the vibra-
tion or shock is not transmitted to the motion control system.
• Remove any stress being applied to the cables in bundling or wiring them.
Noise Countermeasures
• An noise-isolating transformer is installed for each system to separate power supply circuits
so that noise does not affect other systems. Separate power supplies are installed as fol-
lows:
• Do not use a power supply for more than one system.
• Use wiring with minimal voltage drop from the power reception system to the equipment.
• Wire the system using separate paths from other systems.
• Use an independent ground for the secondary side of the transformer with an indepen-
dent ground pole.
• Separate power lines as far as possible from signal lines to prevent inductive noise (30 cm
min. recommended).
• Place power lines in a metal conduit pipe and ground the pipe.
• Use shielded cables, twisted-pair cables, etc., for signal lines and keep wiring distances
as short as possible.
• Do not bundle power lines together with signal lines or run them parallel with signal lines.
• Ground the common of the shield in shielded cables at only one point. Do not create
loops by connecting more than one point.
• Ground to 100 Ω or less.
• To reduce common impedance, connect ground wires from the equipment to the ground
plate in star connections.
• Do not use crossover wiring to wire grounds.
Cause and correction
Section 11-8
655