Mutec iclock, Operating Manual

Page: 35 / 42

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Manual SDs-01 D 3.2.2003 17:45 Uhr Seite 3
35
iCLOCK EXTENSIONS
iC-ALARM up to operating system V2.10
The optional iC-ALARM interface (ordering no. 8005-065) is only suitable
for iCLOCK software versions up to V2.10. From V2.11 you must (!) use the
iC-ALARM/GPI interface, see below.
The iC-ALARM interface enables to trans-fer signals depending on three
different critical operating conditions. Each of the potential-free alarm
outputs is directly coupled to a floating change-over relay and is designed
as an individual pin of the 15pins high-density
D-Sub connector. Thus all three alarm signals can be transfered simul-
taneously. The relays change their states instantly when the following
operating conditions are present:
ALARM OUT 1: Loss of clock reference at the currently active input
ALARM OUT 2: Loss of Main1 or Main2 (or circuit), only iCLOCK dp
ALARM OUT 3: Loss of the internal reference oscillator
Every of the above mentioned operating conditions activate also the red
front panel LED »ALARM set«.
The relays are normalled when the described operating conditions work
faultlessly. If a disturbance occurs, the according relay faills instantly.
The output contacts supply a max. switching power of 30 W with
30 V / 1A DC / AC peak. The type of the used relays is called TQ2-5V from
NAIS / Matsushita (http://www.nais-e.com/relay/index.html).
Pin numbering of high-density D-Sub connector
1
6
11
5
10
15
iC-ALARM
Pin assignment of 15pins high-density D-Sub connector
D-Sub Pin no.
Description
1 ALARM OUT 1 relay, COM contact
2 ALARM OUT 1 relay, NO contact
3 ALARM OUT 2 relay, NC contact
4 ALARM OUT 3 relay, COM contact
5 Signal ground
6 ALARM OUT 1 relay, NC contact
7 ALARM OUT 2 relay, COM contact
8 ALARM OUT 2 relay, NO contact
9 ALARM OUT 3 relay, NC contact
19 GND
11 Reserved for future applications
12 GND
13 Reserved for future applications
14 GND
NO = normally open; NC = normally closed; COM = common