5 Electrical installation
5.4
Connector BL 4800-M / BL 4800-D:
Power supply [X9]
Servo drives of the BL 4800-M / BL 4800-D series must be connected to the power supply
in accordance with the following illustration:
Figure 10: Connecting a BL 4800-M / BL 4800-D to the supply voltage
Risk of damage to the servo drive
The servo drive will be damaged in the following cases:
l
reverse connection of the 24 V operating voltage connections,
l
excessive operating voltage, or
l
accidental interchanging of the operating voltage and motor connectors.
Risk of destruction due to a connection with reverse polarity
If the polarity of the 24 V supply at [X3] is reversed, the servo drive and the PC will be
destroyed. It is essential that you follow the correct connection instructions.
A 24 V supply and a 48 V power supply are required to operate a BL 4800-M / BL 4800-D.
The 48 V is supplied via [X9], whereas the 24 V supply is provided via [X3]. (See section
5.5
Connector : 24 V supply and STO [X3]
on page 35). A melting fuse or an automatic
circuit breaker must be used in the 48 V power supply (see
on page 34). The GND potentials of the 24 V and the 48 V supply must be connected
to each other at a common point to reduce potential shifts. This common point must be
earthed.
It is possible to couple the DC links of several devices of the BL 4800-M / BL 4800-D
device family by connecting them to a common voltage source. Even in this case, all
GND lines should be connected at a common point.
BL 4800-M / BL 4800-D: Danger of destroying the power supply unit
During braking, a high voltage can be present at [X9], which can destroy the power
supply unit. To prevent this, the switch-off threshold in case of overvoltage must be
suitably parameterised (see section
Power supply via main power unit
in the Product
manual smartServo BL 4000-D / smartServo BL 4000-M).
First, wire the servo drive completely. Then, switch on the 24 V supply and the mains
power supply.
Mounting Instructions BL 4000-M and BL 4000-D
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