Pfeiffer Vacuum TPG 300 User Manual

32 BG 805 970 BE (0306) TPG 300.oi
With <set point> you can cyclically read, enter and
modify the threshold values and assignments of the
switching functions.
The TPG 300 has six switching functions (1, 2, 3, 4, A,
B) with two adustable thresholds each. The status of
each switching function is displayed on the frontpanel.
Four of the switching functions provide floating relay
contacts accessable on the interface and relay board
(→  [1]).
Pressure p
M
e
a
s
u
r
i
n
g
v
a
l
u
e
Switching
function
On Off
Time t
Off
n.c.
n.o.
Upper
threshold
Lower
threshold
Hysteresis
n.c.
n.o.
n.c.
n.o.
Switching points
Display Description/value
Lower threshold, defines pressure value
at which the switching function turns on
when pressure is dropping.
Upper threshold, defines pressure value
at which the switching function turns off
when pressure is rising.
Hysteresis (difference between lower and upper
threshold) is a minimum of 10% of the lower
threshold. This prevents unstable states. If you
set the upper threshold too low, the minimum
hysteresis will go into effect automatically.
5.6 »set point« Mode
The Switching
Functions
Upper/Lower Threshold

Pfeiffer Vacuum TPG 300 Specifications

General

Display	LCD
Communication Interfaces	RS232, RS485, Ethernet
Temperature Range	0 to 50 °C
Accuracy	Dependent on connected gauges
Outputs	Analog, Relay
Operating Temperature	0°C to +50°C
Dimensions	96 mm x 96 mm
Type	Pirani Gauge Controller