TTDJ-99062N page 4 of 8
TYPICAL WIRING DIAGRAMS (All Models)
IGN
GRD
FV+
FV-
ALR
NA
NA
NA
10-32 VDC
Power
supply
Wiring must be kept
separate from ignition leads.
90-350 VDC Capacitive
Discharge Ignition System
Typical Normally
Open Sensors
Typical Normally Closed
Sensor (Remove jumper)
Sensor Input Terminals
NOTES:
1. Sensors are normally open or normally closed
mechanically actuated passive switches or Murphy
certified, non-incendive or intrinsically safe products
.
2. Non-incendive field circuits–VOC= 10.5 VDC, ISC= 1.2 mA.,
CA= 21 uf, LA= 1000 mH.
3. IGN, FV and Alarm outputs are rated 0.5 A continuous 350 VDC.
4. Power input 90-350 VDC, CD ignition.
5. ALR relay must be hermetically sealed relay,
CSA or UL approved for use in Class I, Div. 2,
Grps C & D hazardous locations.
Sensor leads max. length= 500 ft.
POS
NEG
DIODE
FUEL VALVE
ALARM RELAY
IGN
POS
NEG
User wiring installed per NEC for Class I,
Div. 2, Grps. C & D hazardous locations.
Non-incendive field wiring connections to
passive switches. Route leads separate from
other wiring. Refer to Notes (1,2).
FV
ALR
Power Supply
Cover
RS485
A
SD
GRD
NA
FV
ALR
MPU
GRD
10-32VDC
B
SHD
Power Supply
Cover
12-24 VDC
Power supply
Magnetic Pickup
5 to 120 Vrms
Typical Normally
Open Sensors
Typical Normally
Closed Sensor
(Remove jumper)
Sensor Input Terminals
NOTES:
1. Sensors are normally open or normally closed mechanically
actuated passive switches, or Murphy, certified, non-incendive
or intrinsically safe products.
2. Non-incendive field circuits–VOC= 10.5 VDC, ISC= 1.2 mA.,
CA= 21 uf, LA= 1000 mH.
3. SD, FV and Alarm outputs are rated 0.5 A continuous 350 VDC.
4. Power supply, power input 10-32 VDC, 16 W max.
6. K1 and K2 must be hermetically sealed relays, CSA or UL approved
for use in Class I, Div. 2, Grps C & D hazardous locations.
7. Fuel Valve in this diagram could be another relay like K1 and K2.
Sensor leads max. length= 500 ft.
+12/24 VDC
-12/24 VDC
K1
ALARM RELAY
IGNITION RELAY
DIODE
–
+
–
+
K2
User wiring installed per NEC for Class I,
Div. 2, Grps. C & D hazardous locations.
– WARNING –
Explosion hazard.
DO NOT Connect or
disconnect RS485
leads unless
the area is known
to be non hazardous.
Non-incendive field wiring
connections to passive switches.
Route leads separate from other
wiring, refer to Notes 1 and 2.
FUEL VALVE
FV
Alternate hook-up for using latching
48 VDC coil solenoid for alarm air horn.
NOTE: FV– terminal cannot be used
with this hook-up for a CD fuel valve.
SOL
FV+
FV–
ALR
WARNING:
FOR HAZARDOUS APPLICATION REQUIREMENTS, THE TTDJ COMPLETE SYSTEM MUST BE INSTALLED
IN ACCORDANCE WITH THE NATIONAL ELECTRICAL CODE (NEC) CLASS I, DIVISION 2, GROUPS C & D (ARTICLE 504)
SPECIFICATIONS AND PER MURPHY DRAWING 50-08-0039. SENSOR INPUT WIRES MUST BE SEPARATED A MINIMUM
OF 2 IN. (51 MM) FROM OTHER WIRES.
TTDJ-DC AND TTDJ-DC-T TYPICAL WIRING
TTDJ-IGN AND TTDJ-IGN-T TYPICAL WIRING
