Siemens Simotics SD 1LE7, Руководство по эксплуатации

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1LE7
22
A5E36065207, 04/2018
7 Commissioning
Observe the following when carrying out any work on the machine:
● Comply with the general safety instructions (Page 1)
● Comply with the applicable national and sector-specific regulations.
● When using the machine within the European Union, comply with the specifications laid down in EN 50110-1 regarding
safe operation of electrical equipment.
7.1 Setpoint values for monitoring the bearing temperature
Prior to commissioning
If the machine is equipped with bearing thermometers, set the temperature value for disconnection on the monitoring
equipment before the first machine run.
Table 7-1 Set values for monitoring the bearing temperatures before commissioning
Set value Temperature
Alarm 115 °C
Shutting down 120 °C
Normal operation
Determine the maximum operating temperature of the bearings T
operation
taking into account the temperature, bearing load
and influences of the plant on the motor in °C. Set the values for shutdown and warning corresponding to the operating
temperature T
op
.
Table 7-2 Set values for monitoring the bearing temperatures
Set value Temperature
Alarm T
operation
+ 5 K ≤ 115 °C
Shutting down T
operation
+ 10 K ≤ 120 °C
7.2 Commissioning an external fan
An external fan is suitable for use only in unidirectional operation; refer to the specification of the direction of rotation on the
fan cowl or on the fan unit. The external fan ensures that the machine is cooled irrespective of the machine speed or
direction of rotation.
If the cooling air is in open circulation, it must have only weak, chemically abrasive properties and only a low dust content.
Checks before the first test run
Before the first test run, carry out the following checks:
● The external fan is correctly fitted and aligned.
● The rotor runs freely.
● All of the retaining elements and electrical connections are securely tightened.
● The grounding and equipotential bonding connections to the mains have been correctly made.
● The air flow is not impeded or shut off by flaps, covers or similar.
● All protection measures have been taken to prevent accidental contact with moving or live parts.
Performing the test run
1.
Switch the external fan motor on and off briefly.
2. Compare the the direction of rotation of the external fan with the arrow indicating the direction of rotation. If the direction
of rotation and the arrow do not match, then switch two of the three phases of the external fan motor.