41
12.4.
Connection with the Sensor Unit
The table below gives the pin assignment in connecting to the sensor unit.
In connecting to the sensor unit, it is recommended to connect all pins below.
* Connector for connection “SENSOR”: D-sub 15 pin connector male, M2.6mm screw
* Connector for connection “BMR2” : D-sub15 pin connector female, M2.6mm screw
“SENSOR”
Description
Detail
Sensor unit
1
24VDC power supply
24VDC power supply to the sensor unit
1
2
Pressure protection
signal
Protection signal in excess of the higher
limit of measurement is input.
2
4
Emission valid *1
Emission valid signal is input.
4
5
Filament ON
Filament ON signal is output.
5
6
Filament 1/2 changeover Outputs filament 1/2 changeover signal.
6
8
Pressure signal input +
Pressure signal is input.
8
9
Power supply GND
Power supply GND to the sensor unit
9
13
Degas ON
Degas ON signal is output.
13
15
Pressure signal input -
Pressure signal is input.
15
Case
FG
Frame ground
Case
*1: The emission valid signal is a signal indicating that emission current is flowing normally.
The setpoint of this instrument is not actuated unless this signal is input.
12.5.
Connection with External Devices
The table below gives the pin assignment in the connection to external devices.
* Connector for connection “I/O”: D-sub 15 pin connector female, M2.6mm screw
“I/O”
Description
Remarks
2
Pressure protection signal
Lo when actuated, 30VDC
MAX
, 50mA
MAX
, 70mW
3
Setpoint 1 actuating signal
Lo when actuated, 30VDC
MAX
, 50mA
MAX
, 70mW
4
Emission valid
Lo when actuated, 30VDC
MAX
, 50mA
MAX
, 70mW
5
Filament ON
Actuated when shorted to GND
7
Setpoint 3 actuating signal
Lo when actuated, 30VDC
MAX
, 50mA
MAX
, 70mW
8
Pressure signal
0 to 10 VDC
9
Signal GND
GND of pressure, burnout, setpoint, etc.
10
RS485 -
Serial communication RS485 - output
11
Setpoint 2 actuating signal
Lo when actuated, 30VDC
MAX
, 50mA
MAX
, 70mW
12
RS485 +
Serial communication RS485 + output
13
Degas ON
Actuated when shorted to GND
15
Signal GND
GND of pressure, burnout, setpoint, etc.
Case
FG
Frame ground
12.6.
Various Signals
12.6.1.
Output voltage
The output voltage is output with + [8pin] of the I/O connector
→
GND [15 pin]
In case CAL function is enabled, the conversion formula is different from the above
The equation for converting pressure:
P = 10
×
( V – E )
×
10 ^ ( E – 8 + C )
P: Pressure value (Pa)
V: Measurement value output voltage (V)
E: Measured value output voltage from which decimal point is omitted
C: Exponent value of Calculation value
(The value of C in A.B
×
10
C
, refer to section18)
The (V-E) calculated value may become 0.1 or lower due to errors in the sensor's output voltage
and errors with the measuring instrument. If it falls below 0.1 in this manner, we recommend
rounding up to 0.1 and calculating.
Содержание G-Tran ISG1
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