M2PRU
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-5076 Rev.8 P. 4 / 4
ADJUSTMENT PROCEDURE
Scaling Factor
Pulse Width Adj.
Pulse Width
Range Selector
*
Settings 7 through 9 are invalid.
No pulse output with these settings.
The front cover cannot be opened to 180 deg.
when flush with neighboring units.
■
FRONT VIEW (with cover open)
■
RIGHT SIDE VIEW
Pulse Sensing Type Selector
DC
AC
: DC coupling
: Capacitor coupling
DC
AC
(A) 10
–1
(B) 10
–2
(C) 10
–3
(D) 10
–4
(E) 10
–n
*
■
SCALING FACTOR
Positions for the rotary switches 10
–1
through 10
–n
apply re-
spectively to each digit of the decimals and exponential as
shown below.
Output Rate = Input Rate × 0. (A)(B)(C)(D) × 10
– (E)
where the scaling factor is adjustable from
1.0000 × 10
0
thr. 0.0001 × 10
–6
[Examples]
Scaling factor 0.1440:
(A) = 1, (B) = 4, (C) = 4, (D) = 0, (E) = 0
Scaling factor 1.0000 is special:
(A) = 0, (B) = 0, (C) = 0, (D) = 0
■
PULSE WIDTH
Factory adjusted to a suitable value. Use only when the
output device (counter) is not able to read the output pulses.
Min. 400 µsec. recommended for AC/DC switch output of
which the internal voltage drop value may increase with a
shorter pulse width.
OFF
H
ON
L
OUTPUT TYPE
Bold section of
the waveform
is adjustable.
VOLTAGE
PULSE
OPEN COLLECTOR
AC/DC SWITCH
■
PULSE WIDTH RANGE
Selects adjustable range of the output pulse width.
L (Left)
: Approx. 0.2 – 10 msec.
CTR (Center) : Approx. 5 – 200 µsec.
R (Right)
: Approx. 10 – 400 msec.
■
PULSE SENSING TYPE
Provided only when the voltage pulse input is selected. Fac-
tory set to ‘DC coupling.’
When the DC offset is too large to detect by DC coupling,
switch to ‘Capacitor coupling.’
CHECKING
1) Terminal wiring: Check that all cables are correctly con-
nected according to the connection diagram.
2) Power input voltage: Check voltage across the terminal
13 – 14 with a multimeter.
3) Input: Measure the signal between input terminals 1 (+)
and 4 (–) with an oscilloscope.
With voltage pulse input, the signal should be below 1 V
at L level, while it should exceed 2 V at H level.
4) Output: Check that the load resistance meets the de-
scribed specifications.
LIGHTNING SURGE PROTECTION
M-System offers a series of lightning surge protector for
protection against induced lightning surges. Please contact
M-System to choose appropriate models.
