Omega RD200 - Manual (Page 118)

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19. HARDWARE CHECK 19.5 Alarm Output Check
This check is only available for the alarm output (option). It checks the relay drive circuits and relays by outputting
the shorted (on) or open (off) signals at the specified alarm output terminals (relay Nos.).
■
Check Flow Chart
Operation screen
[Engineering mode selection]
( + )
3 sec. or more
    
[Selecting check]
→
    
[Displaying check 1]
     
[Displaying check 2]
    
[Selecting alarm output]
    
[Displaying replay No.]
   
[Programming relay No.]
～ →
   
[Selecting output]
    
Confirming output
* N.C terminals are provided for the
mechanical relay “c” contact output.
Output
Output
condition
N.O - COM
Off
10M Ω or
more MOS relay
On 50 Ω or less
Off
10M
Ω or
more
Mechanical relay
(Common for “a”
and “c” contacts)
On 0.1
Ω ore less
Press or to switch
Check 1 and 2.
(1): Alarm output check
(2): Remote contacts input check
(3): Communications interface check
The programming range of relay Nos.
are 1 to 6 for AL and 01 to 12 for AH.
The selection of output (on or off) is
effective at the moment is
pressed. The previous output status is
kept until then.
Cursor Check
Cursor
(1) (3) (2)
Cursor
Cursor
Relay No.
Open Short circuiting
Resistance values between terminals
Relay No. for alarm output terminals
DISP
°C °F ENTRY
% /
°C °F
ENTRY
0
CLEAR
6
A - Z
ENTRY
℃ 
ENTRY
% /
ENTRY
Cursor
Cursor
Cursor
Ref. 1
Ref. 2
Ref. 3
Ref. 4
Types of check 2 Reference 2
Check 1 and 2 switching
Reference 1
Programming relay No. Reference 3
Output Reference 4
2 sec. or more
SHIFT
6
A – Z