Because RFL™ and Hubbell® have a policy of continuous product improvement, we reserve the right to change designs and specifications without notice.
Table 2-13. System status indicators and the ACO switch
Item
(Fig. 2-27)
Module Module
Label
Multiplexer
Front Panel
Label
Description
1 Power
supply
PS - - - Power Supply Module Fail LED. Lights when power
supply module has failed.
2 Power
supply
J2 - - - 2-Position Jumper Switch J2
(5)
A = Down: Normal factory setting
B = Up: Set this position to enable Alarm when the
Com
mon Module is removed or not engaged correctly.
3 Power
supply
PWR POWER Power LED. Lights when the multiplexer is powered. If
the multiplexer is equipped with a redundant power
supply, this indicator will remain on if one of the power
supplies has failed and the remaining supply has enough
capacity to power the multiplexer by itself.
4 Power
supply
DIS/EN - - - Alarm Cut-Off Switch (Disable/Enable). When this switch
is in the Disabled position and no alarms are active, the
alert indicator will light. When this switch is in the
Enabled position the ALERT and ALARM relays are on
line and will activate in response to system fault
conditions.
NOTE: If the
multiplexer contains two power supply
modules, t
he ACO switches on both
power supply
modules must be placed in the DIS position to disable
the ALERT and FAIL relays.
5 Power
supply
NORM NORMAL Normal LED. Lights when neither an ALERT or an
ALARM condition exists.
6 Power
supply
ALERT ALERT Alert LED. Lights when one or more of the following
conditions exists:
(1)
EXCESSIVELY LOW RECEIVE SIGNAL (RX IN
indicat
or off)
REC YELLOW ALARM (RX IN indicator blinking)
LOOPBACK ACTIVATED (LPBK i
ndicator on)
FALLBACK TIMING ACTIVATED (The TIMING
indi
cator for the programmed timing mode will be
blinking)
SINGLE POWER SUPPLY FAILURE (when two power
supplies are installed
)
ACO ON
DACS MODULE IN ALERT CONDITION
(3
)
7 Power
supply
FAIL ALARM Fail LED. Lights when one or more of the following
conditions exists:
(2)
CPU FAILED (CPU indicator on)
SIGNAL PRESENT BUT OUT-OF-FRAME (RX IN
an
d FRM ind
i
cators on)
NO TRANSMIT OUTPUT (TX OUT indicator off)
DACS MODULE IN ALARM CONDITION
(4)
See Notes on next page.
M-DACS-T1 RFL Electronics Inc.
October 16, 2012 2-50 (973) 334-3100
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