PowerGuard POWERHALT PH3 Owner's manual

L6493 •ECN 1-2212
ProgrammingManual

PROGRAMMING MANUAL • PH3 Mk II AIR INTAKE EMERGENCY SHUT-OFF VALVE
L6493
ECN 1-2212
L6493_Rev1
2
1Operation
When controller is unprogrammed, light will exhibit continuous rapid flash
When controller is programmed and in normal operating mode, light will remain off
When valve is closed, light will become solidly lit
When emergency condition arises and engine shutdown is needed, push toggle switch and valve will close
In overspeed runaway condition, controller will automatically close valve and shut down engine
When Auto Reset Mode is selected, valve will remain closed for a minimum of 15 seconds and then
automatically reset itself to open position. If switch is held closed, valve will remain closed until switch is
released.
When Manual Reset Mode is selected, valve will remain closed for a minimum of 15 seconds. Valve will only
reset itself to open position once operator activates toggle switch again.
Valve is able to remain closed for a maximum time of 18 minutes after which point it will begin to de-rate in
order to protect itself.
2Maintenance
To ensure trouble-free long life of PowerHalt Shut-Off Valve, scheduled monthly maintenance procedure is
mandatory:
As this is a safety device, activation testing must be employed at a minimum of once per month to ensure
system remains functional and valve is free moving. Daily activations are recommended to ensure proper
function of the system.
Inspect all fasteners, clamps, and support brackets for tightness and required torque
Inspect all wiring / cable runs for corrosion, vibration wear, and loose connections
Inspect all hoses for cracks, damage, and leaks
Inspect controller for damage, dirt, and poor connections

PROGRAMMING MANUAL • PH3 Mk II AIR INTAKE EMERGENCY SHUT-OFF VALVE
L6493
ECN 1-2212
L6493_Rev1
3
3System Basics
Controller settings are accessed and configured using
toggle switch and Mode Selection Box.
Mode Selection Box is located within harness. See
Figure 3-A for summary of fuse positions.
Fuses F1 & F2 are inserted or removed to
access different modes.
Mode Selection Box cap must be re-installed after
use.
Fuses F1 & F2 are used only for configuring
modes and are not connected to main system power.
3-A
4Quick Functions
4.1 Manual Trip
Manual Trip closes valve and causes engine (if running) to shut down. To perform Manual Trip:
Push and release toggle switch
4.2 Automatic / Manual Reset Mode
To change valve behaviour between Auto/Manual Reset Mode access Mode Selection Box and:
Remove fuse from F2 on Mode Selection Box to select Auto Reset Mode OR
Insert fuse into F2 on Mode Selection Box to select Manual Reset Mode
4.3 Secondary Trip Speed
System can force engine shutdown at 2 different engine speeds. Secondary Trip Speed can be used for protection of
auxiliary equipment powered by Power Take-Off (PTO) system or as anti-theft mechanism when set near idle speed.
To Activate, Program, or Test Secondary Trip Speed,
Provide 6 to 36 VDC to Pink Wire (Pin 7 on Connector B). This can be done via existing PTO activation device
or via latching switch (not provided).
NOTE: To prevent accidental shut down while enabling/disabling Secondary Trip Speed, a 5 second grace period is
applied when switching to a lower trip speed, to allow for engine speed to reduce. Change is applied immediately
when switching to a higher trip speed.

PROGRAMMING MANUAL • PH3 Mk II AIR INTAKE EMERGENCY SHUT-OFF VALVE
L6493
ECN 1-2212
L6493_Rev1
4
5Trip Speed Programming Procedure
Set-up is required for emergency shut-off system to function. Controller uses input engine speed and user defined
safety margin to program system trip speed.
Before Programming:
oIF valve is synchronized with shut-off system on same engine:
Leave all controllers connected to ensure engine shuts down
oIF valve is synchronized with shut-off system on secondary engine:
Disconnect secondary controller to prevent accidental shut-down of secondary engine
5.1 For On-Highway Vehicles with Variable Engine Speed:
1. Determine desired Trip Speed
Pacbrake recommends 30% above Rated Engine RPM
2. Insert fuse into F1 on Mode Selection Box. Light will exhibit constant rapid flash interrupted by single pulse*
3. Start engine and raise engine speed to Input Speed –half of desired Trip Speed –hold constant
4. Push and release switch to shut down engine†and save Input Speed, light will become solidly lit
5. When light extinguishes, push & release switch 4 times to set Trip Speed to double Input Speed
6. Light will indicate programming has been saved correctly by flashing 4 times
7. Remove fuse from F1 on fuse box and document Trip Speed for future reference
5.2 For Stationary Engines with Constant Operating Speed:
1. Determine desired Trip Speed
2. Insert fuse into F1 on Mode Selection Box. Light will exhibit constant rapid flash interrupted by single pulse*
3. Start engine and allow it to run at constant operating speed
4. Push and release switch to shut down engine†and save Input Speed, light will become solidly lit
5. When light extinguishes, choose desired Overspeed Margin from below to set your Trip Speed:
Push & release switch 1 time –Operating Speed + 10%
Push & release switch 2 times –Operating Speed + 20%
Push & release switch 3 times –Operating Speed + 30%
6. Light will indicate programming has been saved correctly by flashing the same number of times that the switch
was pressed
7. Remove fuse from F1 on Mode Selection Box to exit Programming Mode. Document Trip Speed for future
reference
NOTE: Table below demonstrates a simple example of programming set points for your system:
Input Speed
Switch Pushes
Overspeed Margin
Trip Speed
Margin
RPM
1000
1
+ 10%
+ 100
1100
1000
2
+ 20%
+ 200
1200
1000
3
+ 30%
+ 300
1300
1000
4
Double
+ 1000
2000
*Light will exhibit ‘double pulse’if Secondary Trip Speed is active
†Automatic overspeed protection is disabled during Programming Mode therefore engine shut down is forced on switch push as precautionary measure to
guard against possible emergency situation.

PROGRAMMING MANUAL • PH3 Mk II AIR INTAKE EMERGENCY SHUT-OFF VALVE
L6493
ECN 1-2212
L6493_Rev1
5
6Trip Speed Test Procedure
After following Trip Speed Programming Procedure, system must be tested to ensure Trip Speed was programmed
correctly. Entering TEST Mode causes system to trip at ‘Input Speed’ from Programming Procedure –raising engine
speed to actual ‘Trip Speed’ is unsafe and unnecessary.
Before Testing:
oIF valve is synchronized with shut-off system on same engine:
Leave all controllers connected to ensure engine shuts down
oIF valve is synchronized with shut-off system on secondary engine:
Disconnect secondary controller to prevent accidental shut-down of secondary engine
1. Ensure fuse is removed from F1 on Mode Selection Box
2. With engine off, push switch to close valve and hold switch for 5 seconds until light begins flashing rapidly
3. Release switch to re-open valve. Light will exhibit continuous rapid flash interrupted by single pulse*
4. Start engine and slowly raise engine speed to ‘Input Speed’ as previously recorded
5. Valve will close and red light will illuminate until valve resets itself to open (In Manual Reset Mode, light will stay
illuminated until valve is manually reset by pushing toggle switch)
6. If valve did not close when expected, trip speed may not be correctly programmed. Confirm installation and re-
follow steps indicated on previous page
*Light will exhibit ‘double pulse’ if Secondary Trip Speed is active