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5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: +81(6)6659-8201  Fax: +81(6)6659-8510  E-mail: [email protected]

EM-4854  Rev.15  P. 1 / 8

INSTRUCTION MANUAL

MINI-TOP ELECTRONIC ACTUATOR

(linear type)

MODEL

MSP4/MSP5/MSP6

BEFORE USE ....

Thank you for choosing M-System.  Before use, please check 
contents of the package you received as outlined below.
If you have any problems or questions with the product, 
please contact M-System’s Sales Office or representatives.

 

PACKAGE INCLUDES:

Mini-Top actuator unit........................................................(1)
2.5 mm Hexagon key wrench .............................................(1)
  (For models with manual operation function; option /S)
The Mini-Top is not provided with a yoke or other compo-
nents required for mounting the unit to a valve.  They are to 
be provided by the user.

 

MODEL NO.

Confirm Model No. marking on the product to be exactly 
what you ordered.

POINTS OF CAUTION

 

CONFORMITY WITH EU DIRECTIVES

• This equipment is suitable for Pollution Degree 2 and 

Measurement Category II (Full-open/-closed signal, tran-
sient voltage 1500V).  Reinforced insulation (Full-open/-
closed signal to other, power or metallic housing: 125V) is 
maintained.  Prior to installation, check that the insula-
tion class of this unit satisfies the system requirements.

• Altitude up to 2000 meters.
• The equipment must be installed such that appropriate 

clearance and creepage distances are maintained to con-
form to CE requirements.  Failure to observe these re-
quirements may invalidate the CE conformance.

• Install lightning surge protectors for those wires connect-

ed to remote location.  Refer to “LIGHTNING SURGE 
PROTECTION” section below
.

 

POWER INPUT RATING & OPERATIONAL RANGE

• Locate the power input rating marked on the product and 

confirm its operational range as indicated below:

  100 – 120V AC rating: 90 – 132V, 47 – 66 Hz, approx. 25VA
  200 – 240V AC rating: 180 – 264V, 47 – 66 Hz, approx. 25VA
  24V AC rating: 24V AC±10%, 47 – 66 Hz, approx. 25VA (MSP6)
  24V DC: 24V rating ±10%, approx. 0.6A

• Built-in power fuse: 250V/1A rating; time delay.
• A rush current 1.5 times as high as the above ratings can 

flow at startup.

 

GENERAL PRECAUTIONS

• Remove the power supply to the actuator before wiring.

 

INSTALLATION

• Indoor, or outdoor where the MSP is NOT exposed to di-

rect sunlight

• Ambient temperature:  -5 to +55°C (23 to 131°F)
• Operating humidity 30 to 85% RH (non-condensing)
• Vibration: 2 G (19.6 m/s

2

) max.

• Install the MSP where it can be reached for maintenance 

and inspection.  Be sure to allow at least 15 cm (6 inches) 
clearance above the cover.

 

OUTDOOR USE

• When installing the MSP outdoor or where it is exposed 

to rain or water drops, be sure to fasten the cable connec-
tor tightly and give some slack to the cable.

• Do not mount the MSP in such a direction that the output 

stem or cable connector faces upward.

Cable Connector

DO NOT Pull Tightly

 

ELECTRICAL CONNECTION

• If the unit is a DC-powered model, power supply and sig-

nal lines are not isolated.  Use an isolator, if needed.

• When wiring the unit using a cable longer than the 

standard 1-meter cable equipped to the non-terminal box 
model, use shielded cables for signal line, or install signal 
cables in a separate duct/pipe from power supply cables.

 

LIGHTNING SURGE PROTECTION

• In order to protect the unit from lightning surges enter-

ing through cables, use of appropriate lightning surge 
protectors are recommended.  For 24V DC power supply 
line, choose a surge protector with its maximum surge 
voltage 40V or less between lines.  
Recommended M-System model: MDP-D24.

 

PID CONTROLLER

• Choose PID parameters carefully so that the MV remains 

as stable as possible.  Unstable control shortens the life of 
actuator and valve.

 

O-RING, PACKING

• When replacing the actuator cover after adjustments, 

check that the O-ring is securely placed in the groove. 

• When replacing the terminal box cover, check that the 

packing is properly applied.

Summary of Contents for MSP4

Page 1: ...264V 47 66 Hz approx 25VA 24V AC rating 24V AC 10 47 66 Hz approx 25VA MSP6 24V DC 24V rating 10 approx 0 6A Built in power fuse 250V 1A rating time delay A rush current 1 5 times as high as the abov...

Page 2: ...SP stops supplying power to the motor and the status LED blinks at 0 5 sec intervals The protection can be reset by applying an input signal to move the output stem in the opposite direction or turnin...

Page 3: ...Packing Figure 2 1 MSP6 Component Identification OFF 1 2 3 4 ON PWR INP ALM DLY ZERO SPAN DZ SW1 Insulation Sheet Fuse Connector ZERO SPAN DZ DLY SW1 PWR INP ALM Zero Adjustment Span Adjustment Deadb...

Page 4: ...10 MSP5 3 50 10 20 MSP6 3 58 10 20 MSP6 4 78 20 40 MANUAL OPERATION FUNCTION for MSP4 MSP5 with AC power supply 1 Be sure to turn OFF the power voltage Operation with power voltage being applied may r...

Page 5: ...ing M Systems s yoke set model YSS for Japan sales only refer to Instruction Manual NM 4893 of the yoke set for the installation procedure MSPx Bolts M5 Position Indicator Yoke Lock Nut Output Stem Va...

Page 6: ...to stop turning as soon as they hit the stoppers ADJUSTMENT PROCEDURE A Zero and Span Supply power voltage to the MSP and apply 0 100 input Turn Zero adjuster to adjust the lower end or fully extended...

Page 7: ...HOW TO PROCEED Stem operation Apply input 0 50 100 then back to 50 0 Check that the actuator operates and positions cor rectly at each input value Repair or calibrate the unit Abnormal sound Check if...

Page 8: ...supply Check the connector and connecting section Abnormal power voltage Check the power supply Fuse melted Replace the fuse ON ON Malfunction by noise Turn off the power supply and restart Low power...

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