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W. Baelz & Sohn GmbH & Co.
· Koepffstrasse 5 · 74076 Heilbronn · Germany ·
www.baelz.de Seite | Page
Motorized Rotary Actuator
baelz 375-E42
1.7 Motorized rotary actuator
The baelz 373-E42 is a motorized rotary actuator for flow control applications requiring a 90°
rotation, such as those using drive butterfly valves or ball valves. The actuators are designed
for highly accurate positioning in an industrial environment. Manual adjustment can be carried
one-handed and without use of a clutch. The travel-dependent and/or torque-dependent limit
switches can be individually configured.
Each actuator has a nameplate showing specifications regarding the maximum operating
conditions of the device and a unique, order-related serial number (F no.).
Fig. 1: Baelz nameplate for motorized actuators
2. PRODUCT DESCRIPTION
2.1
Identification
2.2
Technical Specifications
Table 1.
Technical Specifications, baelz 375-E42
Torque Nm
150
Postioning time for 90°
s
60 (at 60 Hz the positioning speed and power consumption both
increase by 20 %)
Power consumption (230 V) VA
65
Nominal current (230 V)
A
0.28
Type of motor
synchronous motor (syn)
Motor protection
thermoswitch
Max. angle of rotation
°
90
Supply voltage
230 V 50/60 Hz ± 10 % (other supply voltages available upon request)
Operating mode acc. to IEC 34-1
S3 - 50 % duty cycle 1200 c/h
Cable glands
1 x M20 x 1.5; 2 x blind plug M20 x 1.5
Electrical connection
internal terminal block, see wiring diagram for terminal allocation
Limit switches
2 torque dependent and 2 travel dependent switches,
max. 250 V AC, ohmic load: max. 10 A, inductive load: max. 5 A
End positions
Mechanical stops, adjustable from the outside
Fitting position
as required, but not "head down" with the actuator below the valve
Ambient temperature
°C
0 to +50
Position indicator
Position indicator in the actuator cover
Manual adjustment
crank wheel
IP-rating according to EN 60529
IP 65
Connection type
DIN 5211, (F04), F05, F07, F10
Weight, approx.
kg
7.5
