SENSOR EXCITATION
With the sensor excitation shortcircuited or exceeding 30
mA, the module stops feeding the power for protecting itself
from overheating.
In order to recover feeding, disconnect the sensor and re-
connect it after removing whatever caused the overload.
CHECKING
1) Terminal wiring: Check that all cables are correctly con-
nected according to the connection diagram.
2) Power input: Check the power input voltage.
3) Input: Check that the input frequency is 50 kHz or less
for AC voltage pulse, 100 kHz or less for other types of
input; each the same or less than the maximum output
frequency.
Check also that the input pulse is of 2 µsec. or wider (ex-
cept for AC voltage pulse) for over 10 Hz, of 10 msec. or
wider for 0 – 10 Hz.
4) Output: Check that the load resistance meets the de-
scribed specifications as below.
OUTPUT
LOAD REQUIREMENTS
Open collector
5 V voltage pulse
50 V DC @ 50 mA max.
1 kΩ minimum
5) Polarity SW: Push in the switch to invert the output log-
ic. Push back for non-inverted output.
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.
M8PP
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-5484 Rev.4 P. 3 / 3
