Metrohm 889 IC Sample Center - Manual (Page 54)

7.2 I/O interface
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46 ￭￭￭￭￭￭￭￭
889 IC Sample Center
7.2.1 Properties of the I/O interface
When the injection valve switches from LOAD to INJECT, an Inject
Marker signal (Contact closure) will be generated at the output lines of
the I/O interface for 0.1…2.0 s.
￭ V
max
= 28 V
DC
/V
AC
￭ I
max
= 0.25 A
7.2.2 Pin assignment of the remote interface
1
5
6
9
5
1
9
6
Figure 15 Pin assignment of I/O socket and plug
Table 1 Inputs and outputs of the I/O interface
Pin No. Assigment
1 Output - Common (COM)
2 Output - Normally open (NO)
3 Input 1 (TTL)
4 Input 2 (TTL)
5 GND
6 Output - Normally close (NC)
7 +5 volts
8 GND
9 GND