Siemens Simovert Masterdrives Compendium page 712

08.2012
Encoder power
supply
SBM board
SBM2 board
Cable length
NOTE
CAUTION
Select motor
encoder P130
Number of lines
P136
Siemens AG 6SE7087-6QX70 (Version AN)
SIMOVERT MASTERDRIVES
The signals of the optical sin/cos encoder are evaluated on an SBM or
SBM2 sensor board [240]. In addition to the signal processing circuits,
the sensor board is equipped with the encoder power supply.
The SBM2 sensor board with extended functionality has meanwhile
taken the place of the SBM sensor board.
The SBM board can provide both 5 V and 15 V as the encoder power
supply. The correct supply voltage for the encoder must be set on the
board. The encoder might sustain damage if the supply is incorrectly
set. The standard ERN 1387 encoder operates on 5 V.
The power supply is set using two hook switches on the SBM sensor
board. An incorrect setting can result in damage to the encoder.
Both switches open
Both switches closed
The encoder supply voltage is set directly in volts via parameter P145
on the SBM2 board. The value in Index 1 defines the supply voltage for
the motor encoder, while that in Index 2 defines the supply voltage for
the external encoder. The maximum supply voltage for Compact units
is 15 V and for Compact Plus units 24 V.
Setting examples:
Par. Value
P145 5
P145 15
The maximum cable length for the sin/cos encoder is 100 m.
An ERN1387 encoder as a motor encoder requires a
6FX_002-2AC31-____ connecting cable.
The encoder cable must not be pulled out or inserted in a live state as
otherwise the encoder may be destroyed!
The automatic board identification system automatically initializes the
parameter for the sin/cos encoder.
Par. Value
P130 3
The resolution of the encoder must be stored in parameter P136. The
resolution is entered in increments per revolution. The input is
graduated as 2P136.
Compendium Motion Control
→ 5 V encoder supply
→ 15 V encoder supply
Encoder supply
5 V supply voltage for encoder
15 V supply voltage for encoder
Select Motor Encoder
Sin/cos encoder as motor encoder
Technology Option F01
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