3.3.2.1 Analog Connector Pin-Out For Igm402 - Instrutech The Hornet IGM402 User Manual

Instruction Manual

3.3.2.1 ANALOG connector pin-out for IGM402

CAUTION! Do not connect power to both the Analog and the RS485 connectors. Apply power only to one
or the other. Applying power to both connectors may cause damage to the gauge and other connected devices.
PIN NUMBER
1
2
3
4
5
6
7
8
9
Degas Status 5
Input Power 4
Analog Output 3
Power Ground 2
Sensor On/Off 1
1
When reading the context under the section of the table above titled PIN DESCRIPTION, references to "ground" are relative to pin 2 of the
ANALOG I/O connector which is the Power Ground or power supply common connection.
InstruTech
ANALOG I/O 9-Pin D-sub male (DE-9P) connector
PIN DESCRIPTION
Sensor on/off input signal. The ion gauge (IG) filament is activated by applying a
1
continuous ground (0 Vdc). This will activate the sensor and will turn on the
filament. The IG filament is turned off by removing the ground. See
for other methods of activating the sensor.
Power ground & sensor on/off ground.
Analog output: log-linear 0 to 9 Vdc, 1 V/decade - IG only
or log-linear 0.5 to 7 Vdc, 0.5 V/decade when used as a full range gauge with one
convection gauge.
Power input (20-28 Vdc at 30 W, minimum). Do not connect power to both the
Analog and the RS485 connectors. Apply power only to one or the other.
Degas status output signal. This is an output signal to other external instruments
to confirm degas is on or off.
Signal: Open collector transistor (grounded emitter) rated at 40 V max. V
I max. Transistor off = degas off, transistor on = degas on.
C
Degas on/off Input signal. Degas is initiated by applying a momentary ground.
The degas cycle will last for 2-10 minutes (based on user setting) even if ground is
removed. The ground must be removed to start cycle again.
Analog output signal ground (Do not use for sensor on/off ground).
Emission current. Applying ground changes emission current from 100 µ A to 4
mA.
Sensor status. This is an output signal switch to other external instruments to
confirm IG filament is on or off.
Signal: Open collector transistor (grounded emitter) rated at 40 V max. V
I max. Transistor off = IG filament off, transistor on = IG filament on.
C
5
9
9 Sensor Status
8 Emission Range
7 Analog Output Ground
6
1
6 Degas On/Off
Analog I/O 9-pin D-sub male (DE-9P)
connector
IGM402 Hornet
section 5.9
, 50 mA
CE
, 50 mA
CE
Page 15