WIRING INSTRUCTIONS
■
SCREW TERMINAL
Torque: 0.8 N·m
CHECKING
1) Terminal wiring: Check that all cables are correctly con-
nected according to the connection diagram.
2) Power input voltage: Check voltage supplied to the rack
(model: 10BXx). For the DC power source, be sure that
the ripple level is within 10% p-p.
3) Input: Check that the input signal is within 0 – 100% of
the full-scale.
4) Output: Check that the load resistance meets the de-
scribed specifications shown below.
OUTPUT
LOAD REQUIREMENTS
Open collector
30V DC @ 100mA max.
5V pulse
250 Ω min.
Photo MOSFET
relay pulse
30V DC @200mA max. (resistive load)
132V AC @200mA max. (cosø=1)
Check also that the receiving instrument is able to accept
the waveform as explained in the figure below.
• Open Collector
• Voltage Pulse
OFF
ON
20%
80%
1 / f
■
Frequency less than 500 Hz at 100% input
➞
Duty ratio 20% (See the figure below)
• OUTPUT 2’s Open Collector and Photo MOSFET
Relay Pulse
OFF
ON
20%
80%
1 / f
H Level
L Level
20%
80%
1 / f
• Open Collector
• Voltage Pulse
■
Frequency greater than 500 Hz at 100% input
➞
See the figure and equation below.
H Level
L Level
Pulse Width
OFF
ON
Pulse Width
Pulse Width [millisec.] =
1
2.09 × 100% Frequency [kHz]
■
When OUTPUT 1 is Photo MOSFET Relay Pulse
➞
See the figure below. ON pulse width is limited
within 75 ±25 msec. when the output frequency
gets low (below 2 to 4 Hz).
ADJUSTMENT 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 signal to a receiving instrument or in case
of regular calibration, adjust the output as explained in the
following.
■
HOW TO CALIBRATE THE OUTPUT SIGNAL
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 5% input and adjust output to 5%.
2) SPAN: Apply 100% input and adjust output to 100%.
3) Check ZERO adjustment again with 5% input.
4) When ZERO value is changed, repeat the above proce-
dure 1) – 3).
MAINTENANCE
Regular calibration procedure is explained below:
■
CALIBRATION
Warm up the unit for at least 10 minutes. Apply 0%, 5%,
25%, 50%, 75% and 100% input signal. Check that the out-
put signal for the respective input signal remains within
accuracy described in the data sheet. When the output is
out of tolerance, recalibrate the unit according to the “AD-
JUSTMENT PROCEDURE” explained earlier.
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.
10AP
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-0851 Rev.5 P. 3 / 3
