Saz soft start unit

Soft Starter Type SAZ

MSF-Vathauer Antriebstechnik GmbH & Co KG 32758 Detmold Tel: ++49 (0) 5231-63030 email: info@msf-technik.de

Am Hessentuch 6-8 Fax: ++49 (0) 5231-66856 www.msf-technik.de

Design With the soft starter SAZ a bi-directional power semi-conductor is integrated into two of the three phases.

By the time-dependant control of the ignition angle it is achieved, that initially only a small current flows into the phases, which progressively increases until the max. current flow angle is effective.

The rate of current rise (acceleration time) and the initial torque (boost) of the motor can be set separately. The setting-potentiometers are accessible by removing the front cover.

If after the set-up time the maximum angle of current flow is effectively, the power semiconductors are bypassed by integrated relay-contacts, so that the start-up electronic is no longer engaged.

By the control of the 2-phases, an asymmetric rotating field is generated which causes a higher thermal loss of the motor.

Through the regulation of the 2 phases, an asymmetric rotating field is generated which causes a higher thermal loss of the motor. For this reason the switching frequency of the motor is limited. Generally, it can be said that the admissible switching frequency is reduced to 1/10.

Adjustment instructions 1. Set the potentiometer „boost“ on 0.

2. Set the potentiometer „acceleration-time“ to maximum.

3. Start the motor. If the motor runs very slowly, switch the motor of and increase the “boost”. The optimum time setting is reached if the relay engages after completion of the acceleration phase.

LED Functions Yellow LED Green LED (flashes) Green LED (Lights up)

Ready Accelerates Bypass-Relays have pulled

MSF-Vathauer Antriebstechnik GmbH & Co KG 32758 Detmold Tel: ++49 (0) 5231-63030 email: info@msf-technik.de

Am Hessentuch 6-8 Fax: ++49 (0) 5231-66856 www.msf-technik.de

Technical Data Type Nominal voltage Frequency Max. motorpower Running-up-time Storage-temperature Operating-temperature Protection-class

SAZ 230 V 230V 50 Hz 1,1 kW 0,3 s – 20 s - 20 °C bis 75 °C 0 to + 40°C IP 20

SAZ 400 V 400V 50 Hz 1,5 – 3,0 kW 0,3 s – 20 s - 20 °C bis 75 °C 0 to + 40°C IP 20

Dimension and Drill Plan 55,0 mm

L1

L2

110,0 mm

L3

Sanftanlauf SAZ 1.5 75,0 mm Boost

Hochlaufzeit

U

V

W

37,5 mm

61,0 mm

MSF-Vathauer Antriebstechnik GmbH & Co KG 32758 Detmold Tel: ++49 (0) 5231-63030 email: info@msf-technik.de

Am Hessentuch 6-8 Fax: ++49 (0) 5231-66856 www.msf-technik.de

Connections

„boost

Standard circuit

Reversing circuit

3-phasemotor

Soft start circuit SAZ

Reversing switch

Connections SAZ - 230V L1 = L1 L2 = L3 =

N

U=

n.c.

V= Output W=

MSF-Vathauer Antriebstechnik GmbH & Co KG 32758 Detmold Tel: ++49 (0) 5231-63030 email: info@msf-technik.de

Am Hessentuch 6-8 Fax: ++49 (0) 5231-66856 www.msf-technik.de