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48NAV

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-9437  Rev.10  P. 8 / 8

 

ZERO ADJUSTMENT

1) Apply 0% input signal.
2) Hold down [M] for 3 seconds* and push [M] to choose [Z].
3) Press [SET], and the bargraph shows 0%.

 

SPAN ADJUSTMENT

1) Apply 100% input signal.
2) Hold down [M] for 3 seconds* and push [M] to choose [S].
3) Press [SET], and the bargraph shows 100%.

 

ALARM SETPOINT ADJUSTMENTS

•48NAV-2: 

[L setpoint] to 100%

    

0% to [H setpoint]

    

No alarm trip is selectable

•48NAV-4: 

HH  [H setpoint] to 100%

    

[L setpoint] to [HH setpoint]

    

[LL setpoint] to [H setpoint]

    

LL  0% to [L setpoint]

    

No alarm trip is selectable

• How to Set LL (or L, H, HH) Setpoints

1) Hold down [M] for 3 seconds* and push [M] to choose 

[LL].

2) Press [UP] or [DOWN] buttons until the indicator comes 

to the desired position, and press [SET].  

  (Same procedure for L, H, HH setpoints)

• How to Cancel HH and H Alarms

1) Press [UP] or [DOWN] buttons until the indicator comes 

to the upper limit, and press [SET].  

  HH indicator must be set before H as the H setpoint can-

not go above the HH setpoint.

• How to Cancel LL and L Alarms

1) Press [UP] or [DOWN] buttons until the indicator comes 

to the lower limit, and press [SET].  

  LL indicator must be set before L as the L setpoint can-

not go below the LL setpoint.

*  The [M] button remain activated for 1 minute after it has 

been used to choose a indicator LED (programming mode).  
During this period, pressing the [M] button briefly is enough 
to choose another indicator.  After 1 minute, it turns to deac-
tivated state.

CALIBRATION PROCEDURE

This unit is calibrated at the factory to meet the ordered 
specifications, therefore you usually do not need any cali-
bration.
For matching the indication to a receiving instrument or in 
case of regular calibration, adjust the output as explained 
in the following.

 

HOW TO CALIBRATE THE OUTPUT INDICATION

Use a signal source and measuring instruments of sufficient 
accuracy level.  Turn the power supply on and warm up for 
more than 10 minutes.

1) ZERO:  Apply 0% input and adjust bargraph to 0% follow-

ing the procedure explained in “ADJUSTMENT PROCE-

DURE.”

2) SPAN:  Apply 100% input and adjust bargraph to 100% 

following the same procedure.

3) Check ZERO adjustment again with 0% input.
4) When ZERO value is changed, repeat the above proce-

dure 1) – 3).

MAINTENANCE

Regular checking procedure is explained below:

 

CHECKING

Warm up the unit for at least 10 minutes.  Apply 0%, 25%, 
50%, 75% and 100% input signal.  Check that the bargraph 
for the respective input signal remains within accuracy de-
scribed in the data sheet.  When the bargraph is out of toler-
ance, recalibrate the unit according to the “CALIBRATION 
PROCEDURE” explained earlier.

LIGHTNING SURGE PROTECTION

M-System offers a series of lightning surge protectors for 
protection against induced lightning surges.  Please contact 
M-System to choose appropriate models.

Содержание 48NAV

Страница 1: ...the operator to turn off the power in put immediately install a switch or a circuit breaker ac cording to the relevant requirements in IEC 60947 2 and properly indicate it POWER INPUT RATING OPERATION...

Страница 2: ...e at the minimum of 3 cm above and below the units for heat dissipation Note 2 No bezel is needed when the panel is cut according to the above drawings Panel thickness 1 6 8 0 mm Panel thickness 1 6 8...

Страница 3: ...mm Slide the top and bottom parts of the bezel into the back of the front cover as shown below Bezel When multiple units are to be clustered side by side insert one bezel between two units as shown be...

Страница 4: ...13 14 15 16 16 M3 SCREW TERMINALS Rounded corners for the option D 2 M3 SCREWS 144 5 67 137 5 5 41 4 1 16 36 1 42 OPTION D BEZEL 3 1 Space required when replacing the scale plate 2 Used for the exist...

Страница 5: ...ay Protection AC Powered 7 8 9 8 9 10 HHa 7 Hc HHc HHb Ha HH OUTPUT H OUTPUT LL OUTPUT L OUTPUT ARARM OUTPUT CODE 2 2 points ARARM OUTPUT CODE 4 4 points U V La Lb Lc Hc Ha Hb H OUTPUT L OUTPUT POWER...

Страница 6: ...or amber Zero Adj amber L Setpoint Adj Trip Indicator green UP Button Mode Selector DOWN Button H Setpoint L Setpoint PV Indicator M 50 40 30 20 10 0 10 20 30 40 50 m3 h 100 SET L Z S 90 80 70 60 50 4...

Страница 7: ...LED OFF LED Blinking Mode Selector 1 S SET S M Span Adjustment Complete SPAN ADJUSTMENT Apply 100 input signal before adjustment ALARM SETTING Proceed after the zero span adjustments 1 Keep pressing...

Страница 8: ...ter it has been used to choose a indicator LED programming mode During this period pressing the M button briefly is enough to choose another indicator After 1 minute it turns to deac tivated state CAL...

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