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MSA DF-8500 C - Page 46

MSA DF-8500 C
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DF-8500 C Point type combustible gas detector with measuring range of 0~100%LEL
[M-10] -- Relay parameter setting
This menu is used to set the relay operation of the transmitter.
(1) Press “+” to select the menu item M-10.
(2) Press “ON” and the screen will display the menu for entering password.
(3) Enter the password (see Section 4.4).
(4) If the password is correct, you will enter the next submenu and be able to set
multiple numerous parameters. At the first time you enter the next submenu, the
scroll menu will show “parameter name = parameter value” . Press the “+” or -" on
the submenu to select the parameter you want to change
(L_ALARM DIR =..., H_ALARM DIR =..., ALARM RELAY =...).
(5) When the parameters that need to be changed are addressed, press “ON” and
then the parameters will flicker to indicate that the device has entered the edit status.
(6) Change the parameters (see Section 4.6).
(7) After the parameters are changed, you can continue to change other parameters
by pressing “+” or “-” , or return to the upper menu M-10 by pressing “OFF” .
Note
1) The energized/de-energized and self-locking/non-self-locking settings of
high and low alarm relays cannot be set separately.
2) The alarm delay is only effective for low alarm relays. In addition, in the
low alarm delay period, if the high alarm is triggered, the low alarm delay
will end immediately, and trigger the low alarm at the same time.
The Fault relay state in non-fault operating condition is Energized and
terminal connections are supplied for Normally Closed and Normally
Open.
The energized fault relay setting provides an electrical path for fail-safe
relay operation. In the event of any failure, including loss of power, the
relay will change to the de-energized state to indicate a fault condition.
The Fault relay state cannot be reconfigured.
47
Submenu
Parameter
Meaning
Default
Adjustable
Range
Remarks
L_ALARM DIR=
Alarm direction of
low alarm relay
25% range O
2
: UP
Others: DOWN
UP, DOWN
UP
Down
H_ALARM DIR=
Alarm direction of
high alarm relay
UP
UP, DOWN
ALARM RELAY=
Alarm relay energ
-ized, de-energized
DISE
DISE, ENER
DISE: de-energized
ENER: energized
ALARM RELAY=
Alarm relay lock
unlock
UNLK
UNLK, LOCK
UNLK: not self-locking
LOCK: self-locking
ALARM DELAY=
Alarm delay
0
0~30 Seconds

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