3 2 1 y y r b, Tamper – System Sensor 2D51 User Manual
Page 3
PendanT mounT aPPLicaTion
The 2D51 can also be used as a pendant mount detector for use in no-flow/
low-flow air-handling systems (0-4000 fpm). The pendant mounted 2D51 is to
be installed into a B210LP or B501 base and wired to a D4P120 power board
only control unit. The D4P120 power board is capable of controlling up to (2)
2D51 sensors.
inSTaLLaTion/Wiring
The B210LP or B501 base(s) can be wired to the D4P120 power board per the
following:
1. Install a jumper wire across the sensor #1 (Y,Y) Tamper terminals as
shown in Figure 3 of the power board.
2. Connect wires to Terminals 1 and 2 of the base. Route wires through the
conduit openings in the D4P120 power board housing. NOTE: Terminal 3
on base is unused.
3. Connect the opposing end of the wires to the terminal connections
marked “SENSOR 1” on the power board. See Figure 3 for Reference.
Ensure that wires are connected to the appropriate terminal locations. A
No. 0 or 1 phillips screwdriver should be used for terminal connection.
If a second sensor is to be installed repeat steps 1-3 while substituting SEN-
SOR 2 in all references. In addition, adjust the middle Dip switch on the pow-
erboard to indicate (2) sensors as shown in Figure 3.
3 2 1
Y Y R B
+ –
TAMPER
+ –
SENSOR 1
D4P120
FIELD INSTALLED
JUMPER WIRE
B501/B210LP
B501/B210LP
FIELD SELECTABLE
DIP SWITCHES
TEST/RESET
BUTTON
GROUND
SCREW
SENSOR #1
TERMINALS
24V
AC
/DC
, 10
24V
AC
/DC
, 9
AU
X OUT +,
19
AU
X OUT -,
20
INT/
AU
X-
, 1
INT+
, 12
ALARM,
15
R
TEST
, 11
R RESET
, 2
AC
C
-
AC
C
+
120 VAC
B
-
R
+
Y
Y
B
-
R
+
Y
Y
TAMPER
TAMPER
SENSOR 1
SENSOR 2
OFF/ON
TRBL SHUTDN
1/2 SENSORS
7/0 MIN
TMPR DEL
AY
7,
NO
18
, C
AUX B
8,
NC
17
, NO
AUX A
6,
C
16
, NC
14
, N0
3,
C
13
, NC
5,
NO
SUP
ALARM
4,
C
SENSOR #2
TERMINALS
POWER
BOARD LED 1
POWER
BOARD LED 2
120
VAC INPUT
24 VAC/
DC INPUT
3
2
1
BASE
TERMINAL 3
BASE
TERMINAL 2
BASE
TERMINAL 1
TAMPER PROOF
TAB
SS-300-017
3 I56-3140-003R
figure 3: Wiring of BaSe To d4P120
H0577-11