INFICON BPG400 ATM to Ultra-High Vacuum Gauge - Manual (Page 43)

tina03e1-b (2004-02) BPG400 v1.om
43
The programming procedure of the switching functions via the RS485 interface im-
plemented in the BPG400-SR differs from the one used on BPG400-SD/SP.
The table below describes the programming possibilities.
Function
Threshold values,
relay operation
Programming
example
(
→ table, 40)
Mea
sured
value
Off Off On
Hysteresis
Re
la
y
Pressure p
SL -
SL +
SL+ < SL–
⇒ relay on below SL+ T: #02SL+1.00E–04 CR
R: *02_PROGM_OK CR
T: #02SL–2.00E–04 CR
R: *02_PROGM_OK CR
Mea
sured
value
On On Off
Hysteresis
Rel
ay
Pressure p
SL +
SL -
SL+ > SL–
⇒ relay off below SL– T: #02SL+2.00E–04 CR
R: *02_PROGM_OK CR
T: #02SL–1.00E–04 CR
R: *02_PROGM_OK CR
Mea
sured
value
Off Off On
Minimal
Hysteresis
Rel
ay
Pressure p
SL + = SL -
2 1
SL– = SL+,
SL+ command sent last
⇒ relay off below
SL+/SL–
(minimal hysteresis) T: #02SL–3.00E–04 CR
R: *02_PROGM_OK CR
T: #02SL+3.00E–04 CR
R: *02_+MIN_HYS CR
Mea
sured
value
On On Off
Minimal
Hysteresis
Rel
ay
Pressure p
SL - = SL +
2 1
SL+ = SL–,
SL– command sent last
⇒ relay on below
SL+/SL–
(minimal hysteresis) T: #02SL+3.00E–04 CR
R: *02_PROGM_OK CR
T: #02SL–3.00E–04 CR
R: *02_–MIN_HYS CR
Programming the second switching function (setpoint B) is identical to
the procedure described above. Threshold variables are SH+ and SH–
in this case.
4.9.4.1 Programming the
Switching Functions