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Operating Instructions
for STÖBER ES servo motors
GB
1.
General information
The operating instructions contain all the informa-
tion necessary for installation, commissioning,
maintenance, etc. of STÖBER ES servo motors as
components of the STÖBER SMS system
(STÖBER servo module system) see SMS cata-
logue. Strict observation of the information and
specifications in these operating instructions is a
prerequisite for the acceptance of any claims made
under guarantee. Subsequent modifications to the
entire drive must be agreed with us in advance, as
no guarantee can otherwise be provided.
We point out definitively that attention should
be paid to the safety and danger indications of
this and all joint operation instructions thereby.
2.
Technical data
The technical data of the ES servo motors or SMS
geared motors and any servo inverters used are
shown on the name plates. For further technical
details and dimensions sheets please refer to the
SMS catalogue.
3.
Design and method of operation
ES servo motors are compact, electronically com-
mutated, permanent-magnet, highly dynamic,
three-phase AC motors of modular design, the sta-
tor and rotor components of which are designed
for optimum energy efficiency, for extremely low
torque ripple and a high power density.
Depending on the Kr constant, ES servo motors
are suitable for connection to servo inverters with
DC link voltages of 240 V, 310 V and 530 V (see
SMS catalogue). Feedback is by resolver or alter-
natively by tacho generator with an integral rotor
position encoding system. The standard version is
the SDS servo inverter for direct connection to the
380 V - 460 V ± 10% 50/60 Hz supply system, and
with a 530 V DC link rated voltage. Designed using
digital technology, the system is convenient and
easy-to-use for both communications and parame-
terisation.
The basic components of the motors are the mo-
tor active part, the housing, the flanged end shield,
the shaft, the feedback unit, the thermal winding
protection system (PTC thermistor or thermocou-
ple), the backlash-free holding brake*), the forced
cooling fan*) and the connecting interfaces (termi-
nal box and/ or plug connectors).
*) Option
3.1
Technical features
Description of the technical characteristics:
Type designation/sizes:
E S 3 2 / E S 3 3 , E S 4 2 / E S 4 4 , E S 5 0 / E S 5 2 / E S 5 4 ,
ES72/ES74/ES76
Mounting positions: IMB5, IMV1, IMV3 (DIN
42950)
Enclosure: IP56 (DIN 40050)
Insulation class: F (VDE 0530, DIN EN 60034)
155C, heating to 105K
Ambient temperature: -20° to +40°C
Installation altitude: Up to 1000 m above mean
sea level.
Cooling system: IC 0041 surface cooling or IC
0641 surface cooling with forced cooling*).
Surface finish: Matte black, RAL 9005
Note: If repainted, the thermal characteristics and
motor performance limits will change.
Quality of balancing: Q 2.5 (VDI 2060) balanced
with a full parallel key. By 01 June 1998 the solid
shaft rotor model will become "balanced with a half
key", in accordance with the most recent standards
(DIN ISO 8821 and DIN EN 60034, Part 14). These
motors will be fitted with a full parallel key on de-
livery and coded "H" on the shaft end face. Models
balanced in both ways can be supplied in the mean-
time.
Winding: Three-phase in a laminated stator as-
sembly. Star circuit. The neutral point is not brought
out.
Connecting leads: U(U1) - black, V(V1) - blue,
W(W1) - red.
Connection: See circuit diagrams.
3.2
Feedback units
ES servo motors are designed so that they can be
fitted either with a resolver or a tacho generator
and rotor position encoder (T-RLG) (ES32/ES33 on-
ly resolver). The respective feedback unit is set to
its optimum angular position, depending on the
servo inverter intended for use, and sealed ex
works.
For positioning tasks in conjunction with higher-lev-
el position control systems, the ES servo motors
can be delivered with incremental encoders, fitted
on request (not necessary in the case of feedback
by resolver, as the system makes a maximum of up
to 2048 pulses per revolution available).
Resolvers
Resolvers are used in conjunction with sine-com-
mutating servo inverters. Two-pole resolvers for a
7 V 10 kHz input voltage and a sine/cosine output
with a transformation factor of 0.5 are supplied as
standard.
Tacho generators and rotor position encoders
(T-RLG) are used exclusively for block-commutating
servo inverters. The system supplies voltages in
proportion to speed (2.3 V/1000 rpm) and corre-
sponding square wave signals for the current com-
mutation.
Incremental encoders
It is generally possible to attach an incremental
speed encoder (even with forced cooled motors),
due to the modular design of ES servo motors. The
generally usable type ROD-426E (Heidenhain) for
square wave pulse trains is provided as standard.
No.: 441970.00
STÖBER ANTRIEBSTECHNIK
Kieselbronner Straße 12 • 75177 Pforzheim
Postfach 910103 • 75091 Pforzheim
Phone +49 (0) 7231 582-0 • Fax +49 (0) 7231 582-1000
eMail: mail@stoeber.de • Internet: http://www.stoeber.de
3.3
Holding Brake (if fitted)
The brake operates backlash-free on the perma-
nent magnet principle, i.e. it acts when there is no
potential. The brake is release electro-magnetical-
ly (coil voltage 24 VDC± 5%).
Caution! Please consider the correct polarity
during connection. Otherwise it could cause
the destruction of the brake.
As STÖBER ES servo motors can be braked active-
ly and very quickly by giving an appropriate setpoint
to the servo inverter, the built-in brakes only act as
a holding brake (standstill brake). No facility for re-
adjustment of the air gap is therefore provided.
Resolver
Tacho generator/
Rotor position encoder
Incremental encoder
Braking from full speed in the case of an emer-
gency stop (e.g. in the event of a power failure or
dangerous situation) and braking during setting up
are nevertheless possible without problems. The
generous design of the brakes (approximately
twice the motor rated torque) means that they are
also suitable for hoisting applications. Technical de-
tails are shown on the name plate and in the SMS
catalogue.
N.B. It is imperative that in the case of hoisting
operations Safety Instructions in 4.2.2 be ob-
served!
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