237-00156 SofTec Microsystems SRL, 237-00156 Datasheet - Page 89

• Manufacturer Part Number: 237-00156
• Description: BOARD ISOLATION FOR ST7
• Manufacturer: SofTec Microsystems SRL
• Type: Optoisolation Boardr

Specifications of 237-00156

• Contents: *
• For Use With/related Products: STMicro ST7FMC Motor Control Device
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

6
AK-ST7FMC Control Panel Features
6.4.1 Main Motor Settings
Page 88
Parameter Name
Motor Type
Poles Pair
Speed
Regulation
Speed Sensor
Feedback
Table 6.6: AK-ST7FMC Control Panel: AC Motor Main Settings
SELNI Induction
Motor
Other 3-Phase
Induction Motor
Number of pair of poles of the motor connected to the Starter Kit.
Induction motors with up to 2 pairs of poles can be used. Setting the
correct number of pairs of poles is important, as this defines the
relationship between speed and stator frequency.
Open Loop
Closed Loop
Enable this feature if speed monitoring is required in Open Loop for
efficiency versus slip characterization.
Parameter Values/Description
The SELNI motor is an 800 W, 190 V, three-
phase induction motor. It features a tachometer
generator for speed monitoring. Due to its size
and weight it is not included in the AK-ST7FMC
Starter Kit but can be ordered separately.
Beginners to three-phase induction motor control
are strongly recommended to first use the SELNI
motor as a learning phase. The “Default
Settings” button restores the best performance
settings for driving this motor when the Motor
Control board is supplied with an input voltage of
42 V DC.
Any three-phase induction motor with or without
sensor (tachometer, encoder, Hall sensor).
Open Loop can be selected for operating the
motor with no sensors and predictable load.
Open Loop can also be used to drive the motor
over the full Voltage/Frequency range. When
selecting Open Loop, no Proportional Integer
(PI) control is available, but speed monitoring is
possible (with the speed sensor). When
characterizing the efficiency versus the slip of
the motor, the speed sensor must be used.
Beware of motor breakdown and reactive
current.
Closed Loop requires the use of the speed
sensor (either a tachometer or an Hall sensor),
and uses the PI control (see real-time settings
below). PI values must be adjusted depending
on load conditions. PI parameters not properly
set may lead to unstable behavior, especially in
case of no load condition.