MSP4 / MSP5 / MSP6
P. / 7
EM-4854 Rev.8
OFF
1
2
3
4
ON
PWR
INP
ALM
DLY
ZERO
SPAN
DZ
Insulation Barrier
Fuse
Connector
SW1
ZERO
SPAN
DZ
DLY
SW1
PWR
INP
ALM
: Zero Adjustment
: Span Adjustment
: Deadband Adjustment
: Restarting Timer
: Direct/Reverse Actions,
Operation at Abnormally Low Input
: Power Indicator (green with power supplied)
: Input Indicator (green with input applied)
: Status Indicator (red flashes in 2 sec. intervals,
flashes in 0.5 sec. intervals with mechanical lock detected)
Remark: Turning adjustment potentiom-
eters and switches with a torque exceed-
ing their tolerance may destroy their
stoppers.
Turn them carefully and stop where they
hit the stoppers. Be careful especially
with Re-starting timer adjustment.
Figure 3. MSP Control PCB Identification
OUTPUT SPAN ADJUSTABILITY
The servo-control circuit compares and amplifies input sig-
nal (setpoint) and feedback signal from a potentiometer, and
drives the motor to such direction to minimize difference of
the two signals.
0
25
50
75
100
25
50
75
100
0
INPUT SIGNAL (%)
STEM POSITION (%)
Span Counterclockwise
Zero Clockwise
Zero Counterclockwise
Span Clockwise
Adjustable Zero Range
Adjustable Span Range
Figure 4. I/O Characteristics (Adjustable Range)
Table 1. Available Stroke Range for Each Model
MODEL
L
MIN. STROKE MAX. STROKE
MSP4-1
29
5
10
MSP4-2
34
8
15
MSP5-1
40
5
10
MSP5-3
50
10
20
MSP6-3
58
10
20
MSP6-4
78
20
40
Figure 5. Minimum & Maximum Stroke
Maximum Stroke
Minimum
Stroke
L
Yoke Surface
MANUAL OPERATION FUNCTION
(for MSP4 AC power supply)
1) Be sure to turn OFF the power voltage. It may result in
electrical shock or system breakdown, if operating while
the power applied.
2) Remove the cap on the cover top using a 22 mm wrench.
3) Insert the attached hexagon key wrench in the manual
drive shaft as shown in figure.
4) The wrench turning direction differs according to the
model.
MODEL
STROKE/ROTATION
[mm/turns]
TURNING DIRECTION
LOOKING FROM TOP
COVER
MSP4-x3
1/27
CCW/EXTEND
MSP4-x4
1/54
CCW/RETRACT
MSP4-x7
1/112
CCW/EXTEND
5) Tighten the cap on the cover with 4 to 6 N
·
m torque.
Turning the torque in excess may damage the screw
thread of the cap.
Note: The manual operation function is not available for
24V DC power model.
Cap
Hexagon key wrench
O ring
Cover
Drive shaft
Rugghölzli 2
CH - 5453 Busslingen
Tel. +41 (0)56 222 38 18
Fax +41 (0)56 222 10 12
www.sentronic.com
Produkte, Support und Service
SENTRONIC
AG
