Drehmo 384771 User manual

Additional operating manual
Of type SIMC with limit switching unit
Operation and servicing instructions Part. no: 384771
Revision: 1.0
Date: April 26, 2017
Keep this manual for future reference.
These operating manual is only valid in connection with the operating manual for i-matic.

Table of Contents
1 Commissioning 3
1.1 Setting the torque values . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 Setting the limit positions . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.3 Setting the reduction gearing for multi-turn actuators . . . . . . . . . . . 6
1.4 Setting the reduction gearing for part-turn actuators . . . . . . . . . . . . 9

1. COMMISSIONING
1 Commissioning
The following chapter describes the commissioning step for DREHMO i matic actuators
(for high temperatures) .
NOTICE
All explanations below relating to commissioning apply to
actuators with clockwise closing valves.
•Clockwise output drive rotation corresponds to direction
CLOSE
•Counterclockwise output drive rotation corresponds to direc-
tion OPEN
•DR and WR switches are designated for torque and limit po-
sition in direction CLOSE
•DL and WL switches are designated for torque and limit posi-
tion in direction OPEN
•The yellow transit screw must be unscrewed, after the setting
of the limit positions
CAUTION
All working steps are performed while cover is open. Danger
of pinching and contact with live parts
•The actuator may only be opened by suitable trained and quali-
fied staff
Additional operating manual 3

1. COMMISSIONING
1.1 Setting the torque values
The torques are set by manufacturer as instructed according to the order. The torques are
only indicated on the name plate if this is specifically requested. If no torques are specified
on the order, the smallest possible torque is set by the manufacturer. The torque can be
infinitely varied within the range given on the name plate by means of the torque scales
affixed to the unit
Use the setting screws for torque setting if torque signals are to be used (refer to fig-
ure 1.1). Loosen screw on top of the cams if torque setting is to be performed in direction
OPEN. The screw on the bottom of the cams is used for torque setting in direction CLOSE.
After unfastening the respective screw, the cams can be readjusted by turning. Turn the
cam until the desired value on the scale is aligned with the mark. Finally, fasten the
appropriate screw.
1. Locking screw for torque adjust-
ment OPEN
2. Scale with setting range for torque
in direction OPEN
3. Setting mark (in this instance
30 Nm for both directions)
4. Scale with setting range for torque
in direction CLOSE
5. Torque switch for direction OPEN
in standard version
6. Torque switch for direction CLOSE
in standard version
7. Locking screw for torque adjust-
ment CLOSE
Figure 1.1: Torque setting
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1. COMMISSIONING
DANGER
Exceeding the maximum permitted torque
•A setting above the maximum permitted torque is not permit-
ted.
DANGER
Regard the permitted torque range for additional gears, if
used
•For actuators that are delivered with an additional gear or
thrust unit by the manufacturer, the permitted torque range is
written outside the housing cover.
1.2 Setting the limit positions
For setting the limit positions for OPEN and CLOSE, use the setting screws as shown in
figure 1.2.
1. Setting screw for limit position
OPEN
2. Setting screw for limit position
CLOSED
Figure 1.2: Limit switches in standard version
For setting a limit position, operate the actuators into the desired position. Press the screw
downward by means of the screwdriver and turn in direction of the arrow. The limit posi-
tion is set when the cam operates the appropriate limit switch. After the setting procedure,
release the screw.
Setting screws for limit positions engage in short intervals while being turned. Once cam
Additional operating manual 5

1. COMMISSIONING
lines up with switch and it operates, stop turning. If the cam is turned too far by mistake,
repeat the entire setting process from the beginning.
NOTICE
The signal of the potentiometer is converted into a 4−20 mA
•Adjust the reduction gearing to the stroke to make it run cor-
rectly
1.3 Setting the reduction gearing for multi-turn
actuators
To reset the reduction gearing according to table 1.1, loosen the fixing screw item 4 in
figure 1.3. After unfastening the screw, the sliding wheel can be moved up (smaller angle
for the mechanical position indicator) and down (larger angle for the mechanical position
indicator). As soon as the new position of the sliding wheel has been reached, fasten the
fixing screw.
NOTICE
Observe correct position of the sliding wheel!
•The splines of the sliding wheel must fully engage into the
counterwheel.
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1. COMMISSIONING
1. Shaft of the mechanical position in-
dicator
2. Sliding wheel
3. Scale with possible setting ranges
for the travel
4. Fixing screw for the sliding wheel
Figure 1.3: Reduction gearing
There is a gear wheel at the bottom of the base plate. The figure 1.4 shows the version for
section III. For section II there would be a big instead of a little gear wheel. The opposite
gear wheel is mounted on an output drive of the actuator.
Figure 1.4: limit switching unit input drive gear wheel
The reduction gearing is available for a range between 1.38 −1,450 turns/stroke. The range
is divided into two sections: III (1.38 −135 turns/stroke, large gear wheel to small gear
wheel) and II (12.4 −1450 turns/stroke; small gear wheel to large gear wheel). Changing
between these ranges requires exchanging the gear wheels on the bottom of the limit switch
base plate. By moving the sliding wheel in one of the positions 4 −11, the required travel
range can be selected.
Additional operating manual 7

1. COMMISSIONING
Transmission ratio of limit
switch wheels
Turns per travel (min. and
max.)
Position of sliding wheel
1:3 (SectionIII) 1
1:3 (SectionIII) 2
1:3 (SectionIII) 3
1:3 (SectionIII) 1.38 −2.49 4
1:3 (SectionIII) 2.5 −4.5 5
1:3 (SectionIII) 4.6 −8.2 6
1:3 (SectionIII) 8.3 −15 7
1:3 (SectionIII) 15.1 −27.2 8
1:3 (SectionIII) 27.3 −49.6 9
1:3 (SectionIII) 49.7 −90.1 10
1:3 (SectionIII) 90.2 −135 11
3:1 (SectionII) 1
3:1 (SectionII) 2
3:1 (SectionII) 3
3:1 (SectionII) 12.4 −22.4 4
3:1 (SectionII) 22.5 −40.8 5
3:1 (SectionII) 40.9 −74.2 6
3:1 (SectionII) 74.3 −135 7
3:1 (SectionII) 135 −245 8
3:1 (SectionII) 246 −446 9
3:1 (SectionII) 447 −811 10
3:1 (SectionII) 812 −1450 11
Table 1.1: Setting the reduction gearing of the limit switching unit for multi-turn actuators
The values of the sliding wheel positions 1 −3 are available on request.
Selection of the highlighted options is recommended and preferred.
NOTICE
If no stroke range is specified on the order, the reduction
gear will be preset at factory
•For output speed of 5−50 turns/minute the factory setting is
section III
•For output speed of 80−160 turns/minute the factory setting
is section II
8 Additional operating manual

1. COMMISSIONING
Setting:
1. If the required rev/stroke ratio of the actuator is communicated to the manufacturer
upon ordering, the actuator is correctly set in the factory.
2. Determine actuator revolutions per stroke (e.g. actuator speed per minute x acting
time in minutes).
3. Determine factory-preset range II or III. Determine actuator speed (via type designa-
tion on the actuator rating plate, e.g. D60 A-40 = 40 rpm)
Range III preset: actuators with output speed 5-50 rev/stroke.
Range II preset: actuators with output speed 25 -160 rev/stroke.
Alternative determination:
Turn sliding wheel into position 1. Perform approx. 13 handwheel turns while ob-
serving the mechanical position indication (if existing) or the operating cams of the
intermediate position switches. If the angle of rotation is > 150◦, range III has been
preset otherwise range II.
4. Set the reduction gearing according to the calculated value by shifting the sliding
wheel with regard to table 1.1.
1.4 Setting the reduction gearing for part-turn
actuators
This limit switching unit is of similar design, however equipped with a reduction gearing
including mere 5 stages (refer to figure 1.5).
1. Reduction gearing with five stages
Figure 1.5: Setting the reduction gearing of the limit switching unit for part-turn actuators
The reduction gearing has a variable setting range, resulting from the plug-in sequence of
the gear wheels at the bottom of the mounting plate. The sections II (small on large gear
wheel) + III (large on small gear wheel) can be respectively preselected by exchanging the
gear wheels on the bottom of the limit switching base plate. For section I, use two gear
wheels of identical size. The setting options of this reduction gearing are specified in the
following table 1.2.
Additional operating manual 9

1. COMMISSIONING
Additional gearing Without SQ SQ SQ
Size DPIM30...DPIM119 DPIM75...
DPIM450
DPIM600...
DPIM900
DPIM1200...
DPIM1800
Swing angle 90◦180◦90◦90◦90◦
Reduction ratio none none 5,5 11 25,3
Number of teeth LS III/15:45 III/15:45 I/30:30 II/45:15 II/45:15
tr/stroke min. 0.25 0.5 1.375 2.75 6.325
Sliding wheel position 1 2 2 1 2
Turning angle α
Cam shaft 175.4193 177.5 214.5 271.3
Settling time % 58.5 64.3 59.1 71.5 90.4
Table 1.2: Setting the reduction gearing of the limit switching unit for part-turn actuators
NOTICE
Different layout for DP319, DP799, DP1599
•The actuators DP319, DP799 und DP1599 are equipped with
a limit switching unit with 11 stages (refer to section 1.3)
10 Additional operating manual

Notes
Additional operating manual 11

DREHMO GmbH
Zum Eichstruck 10
57482 Wenden/Germany
Phone: [phone]
Phone service: [phone]
Internet: www.drehmo.com
E-mail: [e-mail]