53
14.4.
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 “SH2, ST2” : 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
Error signal
Error signal is input.
2
4
Emission Valid
*1
Emission Valid is input
4
5
Filament OFF
Filament OFF signal is output.
5
6
Filament 1/2 changeover Outputs filament 1/2 changeover signal.
6
-
FIL power monitor
*2
Not used
7
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 function that outputs a signal as on (low) when the B-A gauge
emission current is within the specified range.
*2: This unit cannot use. The filament power signal is a function that outputs a signal as on (low)
when the power supplied to the B-A gauge filament has exceed the specified value range.
14.5.
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
Error 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
6
Filament 1/2 changeover
*1
Input a signal when selecting FIL 2
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 signal, burnout signal, 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 signal, burnout signal, setpoint, etc.
Case
FG
Frame ground
*1: Setting only firament1, if you used ST2.
14.6.
Various Signals
14.6.1.
Output voltage
The output voltage is output with + [8pin] of the I/O connector
→
GND [15 pin]
P = 10 ^ { ( V - 7.25 ) / 0.75 + k }
×
C
←→
V = 7.25 + 0.75
×
( Log ( P / C – k )
P: Pressure value (Pressure)
V: Measurement value output voltage (V)
C: Calculation value (Refer to section18)
k: Conversion factor (Refer to the table below)
Measurement Unit
k(Conversion factor)
Pa
2
Torr
0.1249
mbar
0
Summary of Contents for G-Tran ISG1
Page 2: ......
Page 19: ...7 2 5 Installation DIN panel Panel thickness 4mm ...
