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 | DISP |
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2 sec. or more
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| A– Z |
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| [Engineering mode selection] |
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| 3 sec. or more |
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| Cursor |
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| Check |
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| ° |
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| → ENTRY | |||||||||||
| [Selecting check] |
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| F |
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| C |
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| Cursor |
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| [Displaying check 1] |
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| Ref.1 | |||||||
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| % |
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| [Displaying check 2] |
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| Cursor |
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| (1) |
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| [Selecting alarm output] |
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| °F |
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| °C |
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| Cursor |
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| ENTRY |
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| [Displaying replay No.] |
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| Cursor |
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| Relay No. | ||||||
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| 0 |
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| 6 |
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| CLEAR ～ | A- Z → ENTRY | ||||||||||||
| [Programming relay No.] |
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| Cursor | ||||
| [Selecting output] |
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| ℃ |
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| Open |
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| Short circuiting |
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| ENTRY |
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| Confirming output |
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| Ref.4 |
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Relay No. for alarm output terminals
*N.C terminals are provided for the mechanical relay “c” contact output.
Resistance values between terminals
Output | Output | N.O - COM | |
condition | |||
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| Off | 10MΩ or | |
MOS relay | more | ||
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| On | 50Ω or less | |
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Mechanical relay | Off | 10MΩ or | |
(Common for “a” |
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and “c” contacts) | On | Ω | |
| 0.1 ore less |
Reference 1 | Check 1 and 2 switching |
Press % | or / to switch |
Check 1 and 2.
Reference 2 Types of check 2
(1): Alarm output check
(2): Remote contacts input check
(3): Communications interface check
Reference 3 Programming relay No.
The programming range of relay Nos. are 1 to 6 for AL and 01 to 12 for AH.
Reference 4 Output
The selection of output (on or off) is effective at the moment ENTRY is pressed. The previous output status is kept until then.
－１１４－
