Murphy TTDJ-DC-T, TTDJ-IGN, TTDJ-DC, TTDJ, TTDJ-IGN-T Installation And Operation Manual
TTDJ-99062N page 1 of 8
TTDJ Series Fully-Configurable Fault Annunciator
Installation and Operations Manual
TTDJ-99062N
Revised 04-04
Section 50
(00-02-0412)
Description
The TTDJ is a solid-state fault annunciator and shutdown control system,
with hour meter, designed to protect engines, compressors and their associated equipment. Four TTDJ modules are available:
TTDJ-DC
:
Powered by 12 or 24 VDC systems without tachome-
ter and overspeed sensing. Includes RS485 serial port.
TTDJ-DC-T: Powered by 12 or 24 VDC systems with internal
tachometer and overspeed sensing. Includes RS485 serial port.
TTDJ-IGN: Powered by negative ground CD ignition systems
without tachometer and overspeed sensing. Without RS485 port.
TTDJ-IGN-T
:
Powered by negative ground CD ignition systems
with internal tachometer/overspeed sensing.Without RS485 port.
All TTDJ models will accept 32 sensor inputs from normally open and/or
normally closed sensors. Each of the first 16 inputs can be configured for
Shutdown or Alarm Before Shutdown
*
, and can be locked out by one of
the Two Start-Run timers (B1:0-5 min.; B2:0-9:59 min.), or configured as
Class C. The annunciator provides for both closing of a fuel valve, and
grounding of an ignition after a time delay. The TTDJ has built-in Elapsed
Time Meter. Run Hours and Tachometer Settings are stored in nonvolatile memory, as well as the last 4 shutdowns and one alarm (alarm
only stored if active at the time of shutdown). The TTDJ liquid crystal
display annunciates any fault from the sensor inputs, displays engine
speed and elapsed time.
Other features for all TTDJ models are: built-in Test Mode to test the sensor
circuits without shutting down, on-board backup battery to retain the fault
display after shutdown (IGN models only), and a history of the last 4 shutdowns with their associated Run Hours, also stored in non-volatile memory.
TTDJ-DC and TTDJ-DC-T models feature an RS485 serial communications
port (MODBUS RTU slave) to interface with micro-controllers, PC’S,
PLC’s and controllers.
Module/ Head
The module is the brain of the control system. It contains the microcomputer, the Liquid Crystal Display (LCD), the membrane keys for configuring the sensors inputs, the Sensor Inputs Terminal Blocks and the Power
Inputs and Control Output Terminal Block. The TTDJ-DC module also
includes an RS485 serial communications port (MODBUS RTU slave).
Liquid
Crystal Display
The Liquid Crystal Display sequentially provides shutdown/alarm
condition, run hours, rpm, and timer information. A shutdown or
alarm condition is indicated by the appropriate sensor number in
the first two leftmost digits. Hours display uses all the digits. RPM
display is shown in the rightmost digits with a Run Indicator in the first
digit. The Timer display shows the timer number in the first digit and the
time in the last three digits.
T
imers
Active Timers are indicated by the timer number in the first digit of the display, and the remaining time in the last three digits. Timer 1= Class “B1”,
Timer 2= Class “B2”, Timer 3= Test, Timer 4= Ignition Ground Delay.
Power and Control Inputs/Outputs
The TTDJ power and control inputs and outputs are connected to the
Power Inputs terminal block on the back of the TTDJ.
In the TTDJ-IGN and TTDJ-IGN-T the FV+ output is a non-switched output that supplies stored energy from an internal capacitor. -FV and
ALARM outputs are non reversible switched outputs (switched OFF for
normal operation, switched ON for alarm and shutdown). When a shutdown fault is detected, the -FV and ALARM turn ON and after a time
delay, the IGN input switches to ground. The alarm output does not
operate for Manual Stop (code 52).
On the TTDJ-DC and TTDJ-DC-T the IGN, FV, and ALARM outputs
are programmed to switch ON for normal operation.
Sensor Inputs and Terminals
Up to 32 dry contact sensor inputs or Murphy device transistor outputs
can be connected to the back of the TTDJ via a terminal block (32 pair,
screw type, each with a jumper). Sensor inputs 1 to 16 are configurable as
Class“A”, Class “B1”, Class “B2” or Class “C” functions, Shutdown or
Alarm Before Shutdown*. The Class“B” timers allow sensor inputs to be
locked out at start-up. Sensor inputs configured for Alarm Only will cause
the Alarm Output to turn on when tripped, and the sensor number will be
annunciated while the unit continues to run. TTDJ sensor inputs 17-28 are
dedicated as Class “A” Shutdown only. Sensor input 29 can be configured as a
Class “A”, or Class “ESD” input. Sensor input 32 is dedicated as Class “ESD”.
Sensor inputs 30 & 31 can have special functions or be Class “A”. An y
tripped sensor is detected within 1 second after faulted.
Please read the following information before installing. This installation information is intended for all TTDJ Series models.
A visual inspection of this product before installation for any damage during shipping is recommended.
GENERAL INFORMATION
BEFORE BEGINNING INSTALLATION OF THIS MURPHY PRODUCT
✔ Disconnect all electrical power to the machine.
✔ Make sure the machine cannot operate during installation.
✔ Follow all safety warnings of the machine manufacturer.
✔ Read and follow all installation instructions.
CSA Certified for Use in Class I, Div. 2,
Groups C and D Hazardous Areas.
US Patent 6,144,116
(model TTDJ-IGN-T only)
C US
*
Alarm Before Shutdown is a function that causes annunciation and the alarm output, but will not cause a shutdown.
WARNING
Emergency Shutdown
Sensor input number 32 is dedicated to Emergency Shutdown. The
Emergency Shutdown sensor input overrides the Test timer. Additionally,
sensor input 29 can be configured as a Class “A” or Class “ESD” input.
Remote Reset
(optional, Setup 5 = 1, 3, 5 or 7)
When the Remote Reset feature is selected, point 30 with a closed contact
resets the TTDJ in the same manner as when using the Reset key. The
closed contacts to operate the Remote Reset feature should be kept closed
only momentarily for approximately 1 second to cause a remote reset.
Remote Lockout (optional, Setup 5 = 2, 3, 6 or 7)
The Remote Lockout inhibits the Class B1 and Class B2 Lockout timers.
These Lockouts are ignored when a closed switch is seen at Input 31. An
open switch at Input 31 allows the Lockouts to function normally. When the
Remote Lockout is active it resets Class “C”, “B1” and “B2” Lockout timers.
This is intended to be used with automatic starting systems. With a contact closure on terminals 31 with the unit not running, the display will
alternate between either RPM (-T models) and the Class “B1” timer, or
the display will flash (non-T models). The TTDJ should be put into
remote lockout immediately before stopping the engine. The contact closure should be opened once the engine is running. At that time the “B1”
and “B2” timers will be allowed to count down.
Reset Key
The Reset key resets All
faults and initiates the Class “B” timers.
Overspeed (-T models only)
These models feature an internal tachometer with Overspeed Shutdown
(50). This shutdown bypasses the Ignition Ground Delay. It is not
locked out by the Test Timer.
Underspeed Annunciation (-T models only)
TTDJ-IGN-T models display (51) when an underspeed condition occurs. It is
not locked out by the Test Timer.
Loss
of Ignition Annunciation (non -T models)
The TTDJ-IGN models will display (51) when ignition input is lost. It is
not locked out by the Test Timer.
Run/Stop Key (Manual Stop)
The Manual Run/Stop key is used for system shutdown from the panel.
When pressed, the unit will shutdown the system without turning on the
Alarm Output (on -DC models the Alarm Output is turned off on Manual
Stop). Manual Stop (Shutdown 52) is not locked out by the Test Timer.
Low Backup Battery Voltage (-IGN models)
The TTDJ-IGN models have an internal backup battery. When the
“Lowbatt” display appears (this message will alternate with other displays) the battery needs to be replaced, see page 3 for details.
Timer “O” Key
This key zeros the current displayed timer: Class “B1”, “B2”, Ignition
Ground Timer, or Test Timer. If the TTDJ is in the Test mode, it exits Test.
Test Key
Initiates the Test Timer with 5 minutes. Test mode is indicated by the “3” in
the first digit of the display. Faulted inputs are displayed as in normal operation, but the system is not shutdown and the Alarm Output is not turned on.
Press “Reset” to reset the fault and press the Timer “O” to exit. The following shutdowns override Test: Emergency Shutdown (32), Overspeed (50),
Manual Stop (52), Underspeed (51), Loss of Ignition (51) and Optional
Additional ESD if chosen as ESD. If Class “C” functions are used, they will
need to be bypassed to test other sensors. When exiting “Test” with Class
“C” functions, press “Reset” and “Timer 0” simultaneously.
Shutdown History
The TTDJ models store the last 4 shutdown codes and any alarm present
at shutdown, as well as the elapsed time reading at which they occurred.
For instance, if the unit is shutdown from sensor input 1, the display will
show “01 SD1” to indicate the last shutdown. Shutdown #1 was sensor
input #1. Press the “Up” key for “Shutdown 2”, “3”, “4”, and for any present
“Alarm”. To view the elapsed time reading at which any of the shutdowns
occurred, press “Push To Read Hours” key while viewing that shutdown.
Class “B” Lockout Timer
Allows the system to become fully operational without shutting down by
start-up related conditions. Class “B1” and Class “B2” Sensor inputs are
locked out until their corresponding timer expires. Class “B1” Timer is selectable from 0:00-5:00 minutes, and Class “B2” Timer from 0:00-9:59 minutes.
Class
“C” Functions
There is a practical limit of sensor inputs defined as Class “C” Shutdown
and/or Class “C” alarm of 8 points. The Class “C” function operation is that
the sensor will be initially faulted on Start-up. If the sensor never clears there
will not be any annunciation and alarm or shutdown. If the sensor clears for a
full 2 seconds, then it is armed to alarm or shutdown. Pressing the Reset key
will allow a Class “C” alarm function to go back to the Start-up state where it
can remain faulted without annunciation and alarm. An example of a Class
“C” function is Low Discharge pressure.
Ignition
Ground Delay
This delay is selectable from 0-20 seconds. To select the delay use SETUP.4,
see User Set Up Menusand To Enter User Set Up on page 5.
Hourmeter
The TTDJ internal hourmeter keeps track of Run Hours. To display Run
Hours for 5 seconds, press the Push to Read key. Run Hours are stored
in non-volatile memory, maintaining hours in the absence of power.
RS485 Serial Port (TTDJ-DC / TTDJ-DC-T)
The RS485 serial port (MODBUS RTU slave) on the back of the module is
provided for communicating with micro-controllers, PC’s, PLC’s and
SCADA systems (see RS485 Typical Connections, below). It is recommended that a termination
resistor** (customer supplied) be used on the
first and last device connected in a daisy-chain configuration.
The communication parameters are 9600 baud, no parity, 8 bits with 1 stop
bit (9600,N,8,1), half-duplex. The shield terminal on the TTDJ terminal
block should only be used if the drain wire on the shielded cable is not connected to ground anywhere else. Each device must have a unique RTU node
number. A retry delay of 0.3 second may be helpful (set up for 3 retries).
Modbus
Integer Holding Registers
40001= RPM
40002= ETM (elapsed Time Meter 0-65535 Hrs.)
40003= Class B1 (in seconds)
40004= Shutdown Numbers (0=OK) (1-32, 50-52 =SD shutdown)
40005= Output Status (Bit 0= IGN, Bit 1= FV, Bit 2= ALR)
40006= Inputs 1-16 (Bit 0 = TB1..., Bit 15= TB16) (True 1= Inactive)
40007= Inputs 17-32 (Bit 0= TB17.., Bit 15= TB32) (True 1= Inactive)
If 40006 and 40007 both contain “FF” there are no active shutdowns.
RS485 typical connections
TTDJ-99062N page 2 of 8
GENERAL INFORMATION Continued from page 1
**
Terminating resistor is 120 ohms. Install Terminating resistor at the
master and the last slave. Use only Belden 9841 or 3105A cable or
cabling with a characteristic impedance of 120 ohms.
NOTE: The common or
Power Supply grounds
between connected
devices must be connected also.
TTDJ #N+1
RTU Node #N+1
A**
B
SHD
TTDJ #2
RTU Node #3
A**
B
SHD
TTDJ #N
RTU Node #N
A
B
SHD
Other Device
RTU Node #2
A
B
SHD
Polling Device
MODBUS Master
A**
B
SHD
TTDJ #1
RTU Node #1
A
B
SHD
Polling Device
MODBUS Master
A**
B
SHD
The TTDJ-IGN models include a Backup Power Battery located within the
TTDJ module. To gain access to and to replace the battery do the following:
1. Make sure the area is made Non-Hazardous
and shut down the System
(remove power).
2. Using extreme caution remove the Power Supply Cover Screws (located
on the back of the TTDJ module).
3. Gently pull the Power Supply Cover away from the back of the TTDJ to
have access to the old Backup
Battery.
4. Locate the old Backup
Battery.
5. Using extreme caution, not to damage any component, replace the battery
with a 6 VDC, 1300 mAh, Duracell
®
DL223A or Sanyo®CR-P2 Lithium
battery, available from Murphy (p/n 00005125).
6. Carefully proceed to replace the Power Supply Cover.
7. You are now ready to power up your system and resume operations.
TTDJ-99062N page 3 of 8
TTDJ MOUNTING DIMENSIONS (All Models)
WARNING: PERFORM THE MOUNTING OPERATION WITH POWER SOURCE OFF. THE TTDJ SERIES MODULE WAS DESIGNED
TO BE MOUNTED WITHIN A WEATHERPROOF ENCLOSURE. IT IS INTENDED FOR MOUNTING IN A FLAT PANEL. A SQUARE
MOUNTING HOLE OF 5-1/2 IN. (140 MM) AND FOUR MOUNTING SCREW HOLES ARE NEEDED. INSERT THE MODULE FROM THE
FRONT SIDE OF THE PANEL AND SECURE THE FOUR MOUNTING SCREWS AND NUTS THROUGH THE BEZEL.
REPLACING THE BATTERY (-IGN Models only)
WARNING: THE BACKUP POWER BATTERY IS LOCATED WITHIN THE TTDJ MODULE. THEREFORE, EXTREME CAUTION MUST BE
EXERCISED WHEN REPLACING IT. FOR CLASS I, DIVISION 2, HAZARDOUS AREAS INSTALLATIONS, FIRST, SHUTDOWN THE SYSTEM
AND MAKE SURE THAT THE HAZARDOUS AREA IS KNOWN TO BE NON-HAZARDOUS BEFORE OPENING THE POWER SUPPLY COVER.
Power Input (Operating Voltages):
TTDJ-DC; TTDJ-DC-T Models:10- 32VDC, 500 mW max.
TTDJ-IGN; TTDJ-IGN-T Models:90-350 VDC negative ground
CD ignition; approx. 650µA @ 100VDC.
Sensor Inputs: 32 N.O. or N.C. passive switches.
Inputs 1-16: Configurable as Class “A”, “B1”, “B2”, or “C” Shutdown or
Alarm Before Shutdown*.
Inputs 17-28: Dedicated Class “A” shutdowns.
Inputs 29: Configurable as Class “A” or Class “ESD”.
Input 30: Selectable Remote Reset or Class “A”.
Input 31: Remote Lockout or Class“A”; inhibits the Class “B1 &
B2” Lockout Timers.
Input 32: Class “ESD” Overrides Test Timer, typically used for emergency
shutdown.
Outputs: 0.5 A @ 350 VDC.
Outputs Selection: Ground ignition immediately or trip fuel valve and ground igni
tion after time delay.
Communications: RS485 Serial Port, Modbus RTU slave (TTDJ-DC models).
Operating Temperature: -40 to 185°F (-40 to 85°C).
Storage Temperature: -40 to 185°F (-40 to 85°C).
Sensor Scan Rate: Within 1 second.
B1 Start/Run Timer: Adjustable, 0 - 5 minutes.
B2 Start/Run Timer: Adjustable, 0 - 9:59 minutes.
Pulses per Revolution Range for Tach. Calibration:
32-360 (TTDJ-DC-T); 1 - 16 (TTDJ-IGN-T).
Overspeed Set point: 0 - 9999 rpm.
Underspeed Set point: 0 - 5000 rpm.
Magnetic Pickup: 5 - 120 Vrms, 0-10 kHz.
On-Board Backup Power 00005125 (-IGN Versions only):
6 VDC, 1300 mAh, Duracell®DL223A or Sanyo®CR-P2 Lithium battery.
Tachometer Accuracy: ±0.5% of the display reading or ±1 RPM
whichever is greater.
Hourmeter Range: 0 to 65535 hrs.
Hourmeter Accuracy: ±15 minutes per year.
SPECIFICATIONS
*
Alarm Before Shutdown is a function that causes annunciation and the alarm output, but will not cause a shutdown.
5-1/4 in.
(133 mm)
Panel Mounting Side View
Keps
Nut
Mounting
Hole
Panel
RESET
6-1/2 in. (165 mm)
5.50 in.
(140 mm)
SENSOR RPM
READ
HOURS
RUN
STOP
6.0 in. (152.3 mm)
Mounting Hole
5.50 in. (140 mm)
3.0 in.
(76 mm)
6-1/2 in.
(165 mm)
49/64 in.
(19 mm)
3.0 in.
(76 mm)
(152 mm)
0.156 in. (4 mm)
dia. 4 places
6.0 in.
3-3/8 in.
(86 mm min. mounting clearence)
Screw
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