Nord Drivesystems B1091, Operating Manual With Installation Instructions

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Motors – Manual with installation instructions
52 B 1091 en-1221
4 Synchronous motors – special information
The following supplementary or special information applies for these motors.
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DANGER!
Electric shock
The motor is operated with a dangerous voltage. Touching certain conducting components (connection terminals
and supply cables) will cause electric shock with possibly fatal consequences.
Even when the motor is at a standstill (e.g. due to the electronic block of a connected frequency inverter or a
jammed drive unit) the connection terminals and supply cables may carry a dangerous voltage. A motor standstill
is not identical to electrical isolation from the mains.
Even if the drive unit has been disconnected from the mains, a connected motor may rotate and possibly
generate a dangerous voltage.
Installation and work must only be carried out when the motor is at a standstill and is disconnected (all phases
disconnected from the mains).
Follow the 5 Safety Rules (1. Switch off the power, 2. Secure against switching on, 3. Check for no voltage, 4.
Earthing and short circuiting, 5. Cover or fence off neighbouring live components).
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4.1 Type designation
80 D 1 /4
Number of poles
Package length: The 1..9 code depends on the axis height and the length of
the active component
Winding type: T=2100 rpm in Y circuit, 3000 rpm in ∆ circuit
Axis height: 80, 90, 100
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4.2 Connection
Notice! Hazardous voltages occur at the motor terminals when the motor shaft is rotating!
The motors must only be operated with suitable inverters For energy-efficient operation, the inverter
must detect the position of the rotor. Various methods both with and without encoders are available for
this. See also
TI80_0010
Motors are normally supplied with a star circuit. Some operating points can only be used in a delta
circuit. For this, the bridges must be changed according to the circuit diagram in the terminal box
cover.