Super Systems 7EK 31080 - Manual (Page 11)

7
SELECTION OF THE OUT 1 TYPE
The output 1 can be set, by J303, as SSR output (1- 2) or
relay output (2 - 3).
When the relay output is selected, by J302 it is possible to
select the contact used (N.O. = 1-2 or N.C = 2-3) as
shown below:
Fig. 16
OPEN INPUT CIRCUIT
This instrument is able to identify the open circuit for TC
and RTD inputs.
The open input circuit condition for RTD input is shown as
an "overrange" condition.
For TC input, it is possible to select overrange indication
(standard) or underrange indication setting the CH2 and
SH2 according to the following table:
Overrange (STD) CH2 = close SH2 = open
Underrange CH2 = open SH2 = close
Both pads are located on the soldering side of the CPU
card
NOTE: The "Error messages" paragraph gives full
details of the instrument behaviour when an out
of range condition is displayed.
Fig. 12
SH2
CH2
1 2 3
J303
3 2
1 J302
1 2 3
SSR RELAY
31080-1-00.p65 3/24/00, 11:58 AM 7