Agilent Technologies 969-8888, Instruction Manual

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TECHNICAL INFORMATION
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PARAMETER BUFFER (17 BYTES) (continued)
OFFSET
BYTE
SIZE
BYTE
UNIT
RES
RANGE DESCRIPTION
WIN
SERIAL
B0.. B1 - Reserved -
B2.. B3 - Start/Stop/Interlock Mode
Change the logic of Start/stop and Interlock inputs.
Ask to Varian personnel for this option
151
B4.. B5 - Set Point Type
0 = frequency
1 = current
2 = time
3 = status (normal operation)
101
16 1 Bit Field
B6.. B7 - Analog Output Type
Set the analog output on remote I/O connector proportional to:
0 = frequency
1 = power
111
OUTPUT BUFFER (5 BYTES)
OFFSET
BYTE
SIZE
BYTE
UNIT
RES
RANGE DESCRIPTION
WIN
SERIAL
B7 – Start/Stop
0 = Stop
1 = Start
000
B6 – Low Speed
0 = off (set the “target speed”(In Buff byte-8) at” high speed” (Out. Buff.
byte-1))
1 = on (set the “target speed” (In Buff byte-8) at “low speed” (Out. Buff.
byte-3))
001
B5 – Soft Start
0 = off (this function is active at first pump run-up and can’t be deactivated
by the user, after first run-up activate this function only if the pump has
been stopped for at least 3 months)
1= on
100
B4 – Active Stop
0 = off (after a stop command the controller stop driving the motor, the
pump will decrease its speed by friction with gas load)
1 = on (after a stop command the controller will brake the pump using the
motor, activate this function only if you don’t use the vent valve and for few
cycles at week)
107
B3 - Vent Valve On/Off
0 = close,
1 = open
(Valid only if in Parameter buffer Byte-15-B1 = 1, and Byte-15-B2 = 0)
122
B2 – Purge Valve On/Off
Specific option, not available on standard models
145
B1 – Heather Jacket Enable
Specific option, not available on standard models
112
0 1 Bit Field
B0 – Stop Speed Reading
0 = no (after a stop command the user can't know the real pump speed)
1 = yes (after a stop command the user can know the real rotor speed; see
in Buff Byte Offset 6)
167
1 2 Hz 500 - 530 High Speed Value
Set the high rotational speed, default = 530
120
3 2 Hz 500 - 530 Low Speed Value
Set the low rotational speed, default = 500
117