M-8S - MERIT SERIES PowER CondITIonER • EnGLISH
8
CONNECTING MULTIPLE M-8S UNITS IN PARALLEL
Parallel Maintained Mode:
To control multiple M-8S units with a single remote
switch; connect the REM, +12V, terminals of all units
in parallel (Figure A). Make sure that the DIP #3 is
OFF and the positions of DIP #1 and DIP #2 on all
connected units are set to the same position. Con-
nect a single maintained switch (such as the Furman
RS-1) to the nearest M-8S.
Parallel Momentary Mode:
To control multiple M-8S units with multiple switches,
use Momentary mode (DIP #3 ON) and connect
the REM, and +12V, terminals of all units in paral-
lel (Figure B) and connect one or more momentary
contact switches in parallel with the REM, and +12V
terminals. All connected units will change state
(from ON to OFF, or OFF to ON) each time one of
the switches are pressed.
Helpful Hint: Breaker trips or unauthorized access
to the front panel Sequence switch can cause linked
units operating in Momentary mode to fall out of
sync. To restore sync, press and hold the remote
(Figure B) switch for more than 4 seconds. This will
force all linked units into the OFF state. Linked units
can also be re-synced by cycling AC power to all
connected units.
CONNECTING MULTIPLE M-8S UNITS IN SERIES
Series Maintained Mode:
To operate multiple M-8S units in series using a
single remote switch; connect a maintained contact
switch between the REM and +12V on the primary
unit and connect a PS-REL between the DELAY 3
outlet on the primary unit and the REM and +12V
pins on the secondary unit. Continue connecting
M-8S units in this pattern until all units have been
connected.
When the primary unit sequences ON the PS-REL
will activate as soon as the DELAY 3 outlet on the
primary unit has been activated. This will cause the
secondary unit to begin to sequence on.
DELAY 3
PRIMARY M-8S UNIT
REMOTE PORT
12V STAT REM GND
1 2 3
12V ON
12V OFF
GND
ON
MOM
MNT
1
2
3
DLY
ADJ
AC
RELA
Y ACCESSOR
Y
MODEL
PS-REL
C NO NC
SECONDARY M-8S UNIT
DIP 1, 2, 3 = OFF
PS-REL
+12V
STATUS
REM
GND
+12V
STATUS
REM
GND
+12V
STATUS
REM
GND
+12V
STATUS
REM
GND
+12V
STATUS
REM
GND
+12V
STATUS
REM
GND
Fig. A
- Three M-8S units configured for Parallel Maintained mode
with LED indicator.
Fig. B
- Three M-8S units configured for Parallel Momentary
with LED indicator.
