nord NORDAC START Series, Руководство пользователя

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NORDAC START (SK 135E / SK 175E) – Users Manual for Motor Starters
78 BU 0135 en-4118
LED BR Meaning
OFF No cyclic process data communication active, i.e. no data communication with slave.
• PLC / Master in STOP or switched off
• Missing 24 V DC voltage supply to motor starter
• Profibus cable between PLC / Master and motor starter / Slave not connected
• Connections not connected or exchanged
• Bus terminating resistor not set correctly (at first and last slave of bus line)
• Erroneous addressing (wrong address set)
• Missing hardware configuration in PLC / Master, possible wrong GSD file
(NORD0DA5.gsd) used ( Link )
green ON • Normal operation (cyclic process data communication in operation)
4.4.3.3 Configuration
Process data
The process data is used to control the motor starter and communicate its status. The transfer of this
data is carried out cyclically. There is only one process data object (PDO) for the motor starter, with a
fixed data length of 1 byte. Only the bottom 4 bits are used. A distinction is made between the setpoint
PDO (from PLC to device (BUS-IN bits)) and the actual value PDO (from device to PLC (BUS-OUT
bit)).
Bus I/O bits
WARNING
Unexpected movement due to automatic starting
In the event of a fault (communication interrupted or bus cable disconnection, the device automatically switches
off, since the device enable is no longer present.
Restoration of communication may result in an automatic start and therefore, unexpected movement of the drive
unit. To prevent any hazard, a possible automatic start must be prevented as follows:
• If a communication error occurs, the bus master must actively set the control bits to "zero".
The device is equipped with two additional digital inputs for connecting initiators. However, there are
no optional outputs for connecting actuators which are operated directly via the BUS. The following
connections are each provided for four reference data bits:
BUS-IN Function (P420[-04…-07])
Status
Status
Bit 1 Bit 0
Bit 0 Enable right 0 0 Motor is switched off
Bit 1 Enable left 0 1 Field of rotation right present at motor
Bit 2 Acknowledge fault 1) 1 0 Field of rotation left present at motor
Bit 3 Release brake manually 2) 1 1 Motor is switched off
1) Acknowledge with flank 0

1.
For control via the bus, acknowledgement is not
automatically performed by a flank on one of the
enable inputs
2) 0 = Brake applied, will be released automatically if
required
1 = Brake is released immediately.