product presentation - telma usa · 2020. 12. 11. · telma amps within specifications x hydraulic...
TRANSCRIPT
![Page 1: PRODUCT PRESENTATION - TELMA USA · 2020. 12. 11. · TELMA AMPS WITHIN SPECIFICATIONS x HYDRAULIC BRAKE FOOT SWITCH ADJUSTMENT xx DASH LIGHT BAR FUNCTIONS WHEN TELMA IS APPLIED –](https://reader036.vdocuments.site/reader036/viewer/2022081511/61097218e9fef77ea241ba72/html5/thumbnails/1.jpg)
1TL101018 Telma Retarder Inc. 2020
PRODUCT PRESENTATION
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OVERVIEW
How the Telma Works
System Components
Types of Control
Wiring Diagrams
Periodic Inspections
Troubleshooting
Repairs
Retarder Serial and Part Number Identification
Telma Technical Support Website
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WHAT ARE FOUNDATION BRAKES DESIGNED TO DO?
STOP THE VEHICLE WITHIN A CERTAIN DISTANCE
HOLD THE VEHICLE WHEN STOPPED
FOUNDATION BRAKES ARE NOT DESIGNED TO MAKE REPEATED STOPS WITHOUT A REDUCTION IN
PERFORMANCE
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BENEFITS OF A FRICTIONLESS BRAKING SYSTEM
ADDITONAL BRAKING
BRAKING WITHOUT WEAR
BRAKING WITHOUT FADE
EXTENDED FOUNDATION BRAKE LIFE
THE ADVANTAGE OF A SECOND BRAKING SYSTEM
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HEAT EFFECTS ON BRAKE LININGS
TELMA KEEPS BRAKE TEMPERATURES TO A SAFE LEVEL5TL101018 Telma Retarder Inc. 2020
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HEAT EFFECTS ON TIRES
DRUM
BEAD
RIM
TELMA KEEPS BRAKE DRUMS COOLER
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TELMA OPERATION
Electric current is sent to coils with alternate polarity, creating a magnetic field
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OPERATING PRINCIPLE
Eddy currents ‐ generated as the rotors pass through the magnetic field, slow the rotation of the driveline
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DESIGN
Air cooled ‐ heat generated by the rotors is dissipated directly to the air
Frictionless design ‐ no contact between moving parts
Self Regulating – heat absorbed equals heat dissipated
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TYPES OF TELMA
FOCAL SERIESMOUNTS ON AXLE OR TRANSMISSION
AXIAL SERIES MOUNTS TO FRAMERAIL
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Axial AC SERIES
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OLDER GENERATION
AC50‐55 LIGHT DUTY
AC82‐45 HEAVY DUTY
AC82-45 is still available for some industrial applications
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Axial AD SERIES
Coils
StatorRotor
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MEDIUM TO HEAVY DUTY
AD61‐30
AD61‐55
AD72‐00
AD72‐45
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Axial AF30‐35
Coils
Rotor
Stator
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Typical applications are Ford Transit and Mercedes Sprinter
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Axial AF5 SERIES
Coils
RotorStator
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AF50-55Typical applications include Ford E Series Chevrolet G4500
AF50-90Typical applications are vehicles with hydraulic brakes from the following manufacturersFord F SeriesNavistar Freightliner
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Axial AF8 SERIES
Coils
RotorStator
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EXTREME DUTY
AF83‐20
AF83‐40
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FOCAL SERIES
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- Typical applications include fire trucks , rear engine vehicles ,short wheelbase vehicles- Mounts directly to the differential .- No shaft or bearings- Less weight and less drive shaft shortening than axial type.- Designs are specific to each axle.Meritor single axlesDana single and tandem axles .
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TYPES OF CONTROL
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TELMA CONTROL SYSTEM WITH RELAY BOX
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Hydraulic brakes without brake pedal position message
Vehicle CAN
Air brakes without brake pedal position message
Optional Hand Control
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TELMA CONTROL SYSTEM WITH iRCS
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For Hydraulic brakes without brake pedal position message
Vehicle CAN
Air brakes without brake pedal position message
Optional Hand Control
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BRAKE PEDAL “FOOT CONTROL”• ACTIVATES AUTOMATICALLY WHEN FOOT BRAKE IS APPLIED• USED IN URBAN STOP AND GO APPLICATIONS
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TIG31066 rotary switch for hydraulic brakes (when brake pedal position message is not broadcast by the CANBus) –
must be used with TRCM control module – previously plunger type switch which is no longer available was used with ABS interface or speed
switch
TIG31065 pressure transducer for air brakes
(when brake pedal position message is not broadcast by the CANBus) – must be used with TRCM control module –
previously air pressure switches were used with ABS
interface or speed switch
If brake pedal position message is broadcast by the
CANBus foot control is managed by the TRCM
control module and no switch is needed
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OFF THROTTLE CONTROL
• TELMA ACTIVATES WHEN THE ACCELERATOR IS RELEASED
• USED FOR AUTOMATIC ACTIVATION BEFORE THE BRAKES ARE APPLIED
• LIMITED TO ONE OR TWO STAGES BECAUSE TELMA ACTIVATION IS NOT PROGRESSIVE
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MANUAL “HAND CONTROL” USED FOR APPLICATIONS WHERE
THERE ARE LONG DESCENTS
MUST BE TURNED OFF MANUALLY
CONTROLLED WITH A LEVER ON THE DASH OR STEERING COLUMN
NOT RECOMMENDED FOR URBAN STOP AND GO APPLICATIONS
MAY BE USED TO PRESELECT THE NUMBER OF TELMA STAGES TO COME ON WHEN ACCELERATOR IS RELEASED
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SYSTEM COMPONENTS
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ABS interface and speed switch
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The Telma ABS interface was used to connect to the vehicle ABS and speed signal using a hard wired connection to turn off the Telma system during an ABS event and to provide low speed cutoff
These two components were used for low speed cutoff and connection to ABS before CANBus communication was available. They are no longer available.
The Telma speed switch was used to connect to the vehicle speed signal using a hard wired connection to provide low speed cutoff for vehicles that were not equipped with ABS
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TELMA FOOT SWITCH FOR HYDRAULIC BRAKE SYSTEMS
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A plunger type switch was used previously but is no longer available
A mechanical switch is only needed for hydraulic brake systems where the brake pedal position message is not broadcast on the CANBus
The Telma rotary type switch replaced the plunger type switch and is the current switch if needed. It sends a variable increasing voltage to the TRCM as the brake pedal is applied.
Note: no foot switch is needed on any light truck chassis from MY2012
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TELMA FOOT SWITCH FOR AIR BRAKE SYSTEMS
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Pressure switches were used prior to the introduction of the Telma TRCM controller in 2010
A pressure transducer is used for air brake systems and connected to the primary delivery port of the treadle valve
A pressure transducer has been used since introduction of the Telma TRCM controller and is needed if the brake pedal message is not broadcast on the CANBus
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Telma Retarder Control Module (TRCM1) Telma Retarder Control Module (TRCM1)
Released in 2010
Obtains information from the vehicle CANbus system (J1939, J2284) No longer requires hardwired ABS signal, speed signal, etc.
Activates retarder using pressure transducer for air brake systems or rotary switch for hydraulic brake systems
Telma Desktop Client Software:
PC interface software for configuration and diagnosis
Free download from telmausa.com
Configuration menu allows users to change settings such as the low speedcutoff, off throttle control, and adjust when each stage turns on.
Low speed cutoff can be set to 0 MPH to allow for testing of the Telma system at a stand still.
Diagnostics menu simplifies troubleshooting.
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Telma Retarder Control Module (TRCM2) Telma Retarder Control Module (TRCM2)
Latest control module design released in 2019
Same features as TRCM1 – PC configuration and diagnostics
New Features
Direct usb connection using usb‐c connector on the board – usb to serial adapter no longer needed
Automatic virtual COM port connection
Can now control electronic PWM power module in addition to relay box
Apple and Android Phone apps for configuration and diagnostics
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Distributes battery power to the TELMA in 4 stages
Installed on the frame rail between the batteries and the TELMA
Should always be mounted in a vertical position with the wiring coming out of the bottom
RELAY BOX
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Can be used in place of relay box Premium product optional upgrade All electronic – no parts to wear Stepless Pulse Width Modulation (PWM) activation Activation from 0 to 100% instead of 4 stages Manufactured to aircraft industry quality standard ISO26262
iRCS – PWM power
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Indicator Lights
• Dashboard Indicator– Drivers main indication of the Telma’s operation– 4 individual LED’s, one for each stage– Located in direct view of driver, on dashboard
4
POWERLEVEL
21
3
POWERLEVEL
4
21
3
POWERLEVEL
4
21
3
POWERLEVEL
4
21
3
TELMA POWER= 25%
TELMA POWER= 50%
TELMA POWER= 75%
TELMA POWER= 100%
TELMA POWER= OFF
4
POWERLEVEL
21
3
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WIRING DIAGRAMS
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TELMA WIRING TRCM and RELAY BOX
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TELMA WIRING TRCM and iRCS
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PERIODIC INSPECTIONS
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InitialCheck at
Check every Check every
Miles 3000 12000 40000
hours 100 650 2550
months 1 4 12
NO ABNORMAL END PLAY BETWEEN THE ROTOR AND STATOR xAIR GAP WITHIN SPECIFICATIONS x x
COILS, STATOR, AND ROTORS FOR DAMAGE xTELMA GREASE SEALS (AD/AC/AF SERIES) / GREASE INTERVAL (CC SERIES) x
FASTENER TIGHTNESS – DRIVE SHAFTS AND TELMA BRACKETS x xCONDITION OF RUBBER MOUNTS (AD/AC/CC SERIES ONLY) xGROUNDS , WIRING and RELAY BOX CONTACT CONDITION x x
TELMA AMPS WITHIN SPECIFICATIONS xHYDRAULIC BRAKE FOOT SWITCH ADJUSTMENT x x
DASH LIGHT BAR FUNCTIONS WHEN TELMA IS APPLIED – ROAD TEST x xTELMA TURNS OFF WHEN VEHICLE STOPS – ROAD TEST x x
General Periodic Inspections
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The TELMA is a very low maintenance device. The following quick, visual,
inspections can improve the life expectancy and performance of your
retarder.
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WASHING WASH TO KEEP ROTORS CLEAN FOR
MAXIMUM COOLING WASH ONLY WHEN COLD WASH AS OFTEN AS NEEDED –
MORE OFTEN UNDER HARSH CONDITIONS
IF PRESSURE WASHED – DO NOT USE DETERGENT OR SPRAY DIRECTLY AT COILS
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AF
ACAD
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PART NUMBER AND SERIAL NUMBER INDENTIFICATION
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AC SERIES IDENTIFICATION
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BOTTOM OF FRAME
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AD/AF SERIES IDENTIFICATION
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AD/AF Seriespart number and serial number
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BARCODE STICKER AND ENGRAVED ON FRAME 90° CLOCKWISE FROM CONNECTING BLOCK
FOCAL IDENTIFICATION
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TECHNICAL SUPPORT
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Website www.telmausa.comPhone: 1-847 593-1098 option 4
Email: [email protected]