item Controller BL 1-04 /C
― Product manual
54
9.2 Additional requirements for the UL approval
Mains power supply protection
Integral solid state short circuit protection does not provide branch circuit protection. Branch circuit protection must be provid
-
ed in accordance with the Manufacturer Instructions, National Electrical Code and any additional local codes.
▪ BL 1-04 /C: Suitable For Use On A Circuit Capable Of Delivering Not More Than 5,000 rms Symmetrical Amperes, 240
Volts Maximum When Protected by A Circuit Breaker Having An Interrupt Rating Not Less Than 10 rms Symmetrical Amperes,
240 Volts Maximum.
Observe the following specification for the main fuse: Listed Circuit Breaker according to UL 489, rated 277 Vac, 10 A, SCR
10 kA
Wiring requirements and environmental conditions
▪ Use 60 / 75 °C copper conductors.
▪ For use in Pollution Degree 2 Environment only.
9.3 BL 1-04 /C: Connector: power supply [X9]
Servo drives of the BL 1-04 /C series must be connected to the voltage supply and an optional brake resistor in accordance
with the following illustration.
L
N
ZK+
ZK-
R_EXT
R_CH
PE
24V
GND
Mains phase
Mains neutral conductor
Pos. DC bus voltage
Neg. DC bus voltage
Connection of external brake resistor
Connection ground conductor from mains
24V supply
Reference ground for 24V supply
Power supply [X9]
external
brake resistor
main fuse
F1
+24 V
0 V
PE
N
L
Figure 20: Connection of a BL 1-04 /C to the power supply [X9]
NOTICE
Risk of damage to the servo drive
The servo drive will be damaged in the following cases:
▪ reverse connection of the 24 V operating voltage connections,
▪ l excessive operating voltage, or
▪ l accidental interchanging of the operating voltage and motor connectors.
A 24 V supply and a single-phase mains power supply are required to operate a BL 1-04 /C. A single-phase automatic circuit
breaker must be installed in the mains power supply line (see section Cable type and configuration [X9] on page 55). Direct
DC coupling of the DC buses of several devices with equal DC bus voltage is possible by way of the terminals ZK+ and ZK-.
The servo drive has an internal brake chopper and an internal braking resistor. For higher braking power, an external braking
resistor can be connected to connector [X9] in parallel to the internal braking resistor.The servo drive must be connected to
earth (ground) with its PE connectors (section 9.1.3 Proper wiring on page 52).