Safety instructions
2-2
L
MA9300PLC EN 1.4
2.2 Layout of the safety instructions
• All safety instructions have a uniform layout:
– The icon characterizes the type of danger.
– The signal word characterizes the severity of danger.
– The note text describes the danger and gives information on how to prevent dangerous
situations.
Signal word
Note
Icons used Signal words
Warning of
damage to
persons
Wa r n i ng o f
hazardous electrical
voltage
Danger! Wa r n s of impending danger.
Consequences if disregarded:
Death or severe injuries.
Warning of a general
danger
Warning! Wa r n s of potential, very hazardous situations.
Possible consequences if disregarded:
Death or severe injuries.
Caution! Wa r n s of potential, hazardous situations.
Possible consequences if disregarded:
Light or minor injuries.
Warning of
damage to
material
Stop! Wa r n s of potential damage to material.
Possible consequences if disregarded:
Damage of the controller/drive system or its environment
.
Other notes Tip! This note designates general, useful notes.
If you observe it, handling of the controller/drive system is made easier.
2.3 Residual hazards
Protection of
persons
After mains voltage disconnection the power terminals U, V, W and +U
G
,-U
G
carry hazardous voltages at least 3 minutes
after mains disconnection.
• Before working on the controller, check that no voltage is applied to the power terminals.
Protection of
devices
Cyclic connection and disconnection of the controller supply voltage at L1, L2, L3 or +U
G
,+U
G
may overload the internal
input current load:
• Allow at least 3 minutes between disconnection and reconnection.
Overspeeds Drive systems can reach dangerous overspeeds (e.g. setting high field frequencies for motors and machines which are
not suitable):
• The controllers do not offer any protection against these operating conditions. Use additional components for this.
Parameter set
transfer
During parameter set transfer, the control terminals of the 9300 servo can have undefined states!
Therefore the plugs X5 and X6 must be removed before transfer. Thus it is ensured that the controller is inhibited and all
control terminals have the defined state ”LOW”.
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