SEW-Eurodrive D 16, Руководство по эксплуатации

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5
Startup
Installation and setup of optional equipment
26
Operating Instructions – Explosion-Proof VARIMOT
®
Variable Speed Gear Units and Accessories
Installation
and adjustment
of other speed
monitors
If other speed monitors are used, they must feature an intrinsically safe sensor
input (identification color: blue) for evaluation of sensors according to DIN 19234
(NAMUR) and be approved for use of this sensor in potentially explosive atmo-
spheres.
The voltage encoder (sensor) generally features a blue connection lead and must
conform to DIN 19234 (NAMUR). The corresponding inspection number may be
attached to the voltage encoder or the connection cable.
If the switching speed of the variable speed gear unit is less than that in the table
(see previous page), the drive motor must be immediately disconnected from its
supply voltage.
The cause of the problem must be eliminated and the operation of the variable
speed gear unit must be stopped for at least 15 minutes before restarting the vari-
able speed gear unit. If incorrect operation by the operating personnel cannot be
ruled out, this interval should be triggered by an automatic restart lockout.
If vibrations or increased operating noises are noticeable after restarting the vari-
able speed gear unit, the friction ring was damaged during the blocking and must
be replaced (see Sec. "Inspection/maintenance", "Replacing friction ring").
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