USER MANUAL - SIP POWER ION PUMP CONTROLLER
M.HIST.0109.23
Rev.1
Page
28
of
62
7
AO
analog output (to refer to ground)
8
SW1 –
negative terminal of switch 1 (over current alarm)
9
+5V
output of positive feeding voltage
10
not
used
11
SW3 –
negative terminal of comparator switch 3
12
SW2 –
negative terminal of comparator switch 2
13
IP active –
negative terminal of switch Operation IP on
14
IN –
negative terminal of control input INTERLOCK
15
SW1 +
positive terminal of switch 1 (over current alarm)
If one of the above events reaches such a value the appropriate comparator-switch is connected
and the impedance between the ter and – is between 11 and 15
Ω
. The maximal current
through the connected terminals must be limited up to 100 mA.
Maximal permissible voltage between switched off ter and – is 30 V.
Above-mentioned polarity for all terminals SW and IN must be kept. All pairs of terminals SW and
IN are galvanically insulated. The voltage between pairs must not exceed 100 V.
The supply works only when the control input INTERLOCK is active, that means, that a current
from 2 to 10 mA through the terminals IN+ and IN– must flow (see
Sec. 3.2
). Input impedance of
circuits IN is about 2 k
Ω
.
The IP ACTIVE comparator-switch is connected when the pump is powered (Active status).
For the output signals SW1 (over current alarm) SW2 and SW3 see
Sec. 4.3
For the Analog output signal see next
Sec. 8.2
8.2. Analog
Output
In the IN/OUT connector the ANALOG OUTPUT is provided for the current/pressure signal (pin 1
and 7). This signal is proportional to logarithm of ion pump current. The limits of the signal are: 0 V
for
≤
1 nA; 10 V for 100 mA. Pressure scale, must be recalculated accordingly to ion pump
sensitivity and chosen pressure unit.