Siemens SIMATIC SIMOSTEP 1FL3041 Functional Description page 13

02.05
Motor connection
Current and
parameter switches
LED status
indicators
Fan
PULSE
ENABLE
DIR
PWM
Positioning
READY1_N
or
control unit
e.g.: FM 353
MSTILL
GATE_N
ENABLE_N
ZERO
READY2
supply
Figure 2-2 FM-STEPDRIVE block diagram
© Siemens AG 1998 All Rights Reserved
FM-STEPDRIVE/SIMOSTEP (FB)
A 3-phase stepping motor of the SIMOSTEP series can be connected to
the motor connection.
These switches are used for setting the motor phase current, the number
of steps (500, 1000, 5000, 10 000 steps/revolution) and the current
reduction
(to 60 % at motor standstill).
To indicate readiness and any malfunctions (short-circuit between motor
phases, supply overvoltage/undervoltage, power controller
overtemperature, no GATE_N signal).
A fan is installed in the FM-STEPDRIVE power controller.
The block diagram shown in figure 2-2 illustrates the most important
functional groups of the FM-STEPDRIVE power controller.
FM-STEPDRIVE
24 V
Fuse
115 V
or 230 V
Mains and intermediate
circuit connection
Power
supply unit
Signal
processing
and
setpoint
Power
generation
amplifiers
with
(ring
current
connector)
control
Monitoring
circuits
2 Functional description
Intermediate
circuit voltage
Fan
3
SM
SIMOSTEP
motor
FLT
OV
LV
TMP
GTE
RDY
2-3