Siemens SIMOVERT MASTERDRIVES Manual page 43

Configuration and Connection Examples
2.3 Points to look out for when using certain option boards
and CUPM
2.3.1 Encoder interface connections
2-16
1. SBM, SBM2 or SBP
The encoder cable must only be connected or plugged when the
converter is de-energized (24 V and DC link). Damage to the
encoder can result if this advice is not heeded. This especially
applies to the multiturn encoder EQN1325. An encoder or cable fault
can cause incorrect field orientation and therefore uncontrolled axis
movement on synchronous machines.
2. SBM2 or SBP
Only the SBM2 and the SBP are permitted to be used for an
external encoder. The pulse encoder simulation of the SBM2 is
generally switched off (also on the X420 front connector).
3. SBM2 or SBP or SBR2
The pulse encoder simulation of the motor encoder (always in
slot C!) on the backplane bus is always applied for further
processing by the technology board T300 or T400.
4. SBP or SBM2 or SBM
If the SBP or the SBM2 or the SBM is the only encoder board
inserted, this board will always be recognized as evaluation for the
motor encoder.
5. If only one encoder board is inserted, this should be installed in
Slot C (otherwise it will not be possible to evaluate the motor
temperature).
6. SBM or SBM2
Different encoder cables must be used for encoders and multiturn
encoders! Fault F051 (during operation) or alarm A18 or A19 is
output if an incorrect encoder cable is used.
7. SBR2
As soon as the supply voltage for the electronics is connected, the
pulse encoder simulation outputs as many pulses as are needed for
the position actual value counter count for a two-pole resolver to
correspond to that of the current rotor position (with reference to 1
revolution).
6SE7087-6QX70 (Version AD)
Compendium Motion Control
02.2004
Siemens AG
SIMOVERT MASTERDRIVES