Eriez 1250 ANALOG, Инструкции по установке, эксплуатации и обслуживанию

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18
G. STANDARD OR fAIL-SAfE
OUTpUT OpERATION
As standard, the alarm outputs of the Detector
will energize when tramp metal is detected. In this
mode, the solid state relay is programmed to oper-
ate in a Normally “OFF” condition. The outputs will
not energize until metal is detected.
Provisions have been made to program the Detec-
tor to operate in a fail-safe mode. In this mode, the
outputs of the Detector are always ener gized and
de-energize when tramp metal is detect ed or when
power to the Detector is turned off. In the fail-safe
mode, the solid state relay is programmed to oper-
ate in a Normally “ON” condition.
Both outputs can be independently programmed.
The direct output (status indicator No. 9) and timed
output (status indicator No. 8) will monitor the
alarm’s output condition. If the status indicator is
lit, its associated output is energized. Switch S2-6
con trols the direct output and S3-6, the timed output
as shown in Table 3. To operate the solid state relay
in a Normally “OFF” condition, open the appropriate
switch. Conversely, to operate the relay in a Nor-
mally “ON” condition, close the switch.
part Iv - System programming
(cont.)
TABLE 2.
S2 - DELAY BEFORE ALARM
S3 - TIME ALARM ON
TABLE 3.
S2 - DIRECT OUTPUT NORMALLY ON/OFF SELECT
S3 - TIMED OUTPUT NORMALLY ON/OFF SELECT