Agilent Technologies Turbo-V 81-AG Notice De Mode D'emploi page 220

17 Technical Information
Controller Connection
Pins Name Description
2-1 Program Programmable analog output.
mable Can be related to : frequency,
Analog power, pump temperature (linear)
Output or pressure read by the external
gauge.
The setting can be done by: front
panel or serial line (win.111).
0 V = 0 Hz, 0W, 0 °C
10 V = 963 Hz, 150 W, 100 °C
See following chart for more
details
9-1 Frequen Analog output proportional to
cy frequency (linear).
Analog 0 V = 0 Hz
Output 10 V = 963 Hz
When the analog output is set to provide pressure signal, the voltage
level is proportional to pressure level and it is generated by control
unit elaborating the independent input by the active gauge.
If the Programmable Analog Output is related to the pressure read by
an external gauge, the controller doesn't replicate exactly the signal
coming from the gauge; the controller converts the gauge signal in the
range from 0 to 10V.
The conversion formula is the following:
V
out
Where:
Vg is the gauge output voltage;
Vout is the Analog Output voltage;
V
g_min
can be drawn from the gauge technical specifications).
220/306
−
V V
g g _ min
= ×
−
V V
g _ max g _ min
V
÷
is the gauge voltage measuring range (these values
g_max
Turbo-V 81-AG Rack Controller User Manual / 87-900-986-01
Electrical
Optically isolated
Rload, min = 10 kohm
Ripple Vpp,max =
200 mV
Precision = 5 %
Resolution = 40 mV
Pin-1negative
Pin-2 positive
Optically isolated
Rload, min = 10 kohm
Ripple Vpp,max =
200 mV
Precision = 1 %
Resolution = 40 mV
Pin-1negative
Pin-9 positive
10
Note
Connect a 100 kohm
resistor between the
2 pins before
measuring voltage
(I)