MT-Propeller ATA 61-07-60 Specification sheet

EASA DE.21G.0008
EASA.21J.020
(E-3760)
ATA 61-07-60
OPERATION- and
INSTALLATION MANUAL
ELECTRIC DE-ICE CONTROLLER
Revision 3: October 10th, 2023
The technical content of this document is approved under authority of DOA No. EASA.21J.020.

ATA 61-07-60
WARNING
People who fly should recognize that various types of risks are involved; and they should take all
precautions to minimize them, since they cannot be eliminated entirely.
Before a MT Electric De-Ice Controller is certified as being safe to operate on an airplane, an
adequate margin of safety must be demonstrated. Even though every precaution is taken in the
design and manufacture of a controller, history has revealed rare instances of failures.
The MT Electric De-Ice Controller is maintenance free. However, the de-icing function should be
tested on a regular basis. See also testing procedures.
As a fellow pilot, I urge you to read this Manual thoroughly.
It contains a wealth of information about your new propeller.
Thank you for choosing a MT-Propeller Electric De-Ice Controller. Properly maintained it will give
you many years of reliable service.
Gerd R. Mühlbauer
President
MT-Propeller Entwicklung GmbH
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ATA 61-07-60
TABLE OF CONTENTS
Page
Warning Remark 0-1
Table of Contents 1
List of Revisions 2
Table of valid pages 3
MT-Propeller Airworthiness Information 4
1. General 5
2. Applicable and referenced documents 5
3. System Overview 7
4. Technical Specifications 8
5. System Interconnections 9
6. Installation 10
7. Operation 11
8. Drawings 13
9. Qualification 14
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ATA 61-07-60
LIST OF REVISIONS
No.
Date of Revision
Page
Short Description
Original Issue
2021-07-01
All Pages
Initial Issue
1
2021-10-06
2, 3, 9;
Model added
2
2022-07-25
2, 3, 17;
Typo corrected
3
2023-10-10
0-1, 2, 3, 4, 7, 8, 8-1, 9, 10, 11,
11-1, 11-2, 11-3, 12, 13, 14, 14-1,
15, 16, 16-1, 17;
Wiring Diagram added,
Drawings updated and added;
NG added
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TABLE OF VALID PAGES
Page
Date of
revision
Page
Date of
revision
Page
Date of
revision
Page
Date of
revision
0-1
2023-10-10
1
2021-07-01
2
2023-10-10
3
2023-10-10
4
2023-10-10
5
2021-07-01
6
2021-07-01
7
2023-10-10
8
2023-10-10
8-1
2023-10-10
9
2023-10-10
10
2023-10-10
11
2023-10-10
11-1
2023-10-10
11-2
2023-10-10
11-3
2023-10-10
12
2023-10-10
13
2023-10-10
14
2023-10-10
14-1
2023-03-12
15
2023-10-10
16
2023-10-10
16-1
2023-10-10
17
2023-10-10
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ATA 61-07-60
MT-PROPELLER AIRWORTHINESS INFORMATION
Every owner should stay in close contact with his MT-Propeller dealer or distributor and Authorized MT-
Propeller Service Shop to obtain the latest information pertaining to his Electrical De-Ice Controller and
its installation. MT-Propeller takes a continuing interest in having the owner get the most efficient use of
his De-Ice Controller and keeping it in the best operational condition. Consequently, MT-Propeller from
time to time issues Service Bulletins, Service Letters and Manuals relating to MT-Propeller systems and
its installation. Service Bulletins are of special importance and should be complied with promptly. These
are sent to dealers, distributors and latest registered owners. Service Letters deal with products
improvements and service hints pertaining to the propeller and its installation. These are sent to dealers,
distributors and occasionally (at the factory`s discretion) to latest registered owners.
If any changes to this manual have been made, the appropriate list of revisions will be revised according
to Revision List in Page 2 of this Manual.
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1. GENERAL
1.1 STATEMENT OF PURPOSE
This operation and installation manual provides instructions on how to install and operate the EDC. It also
provides a system overview including principles of operation.
1.2 SCOPE
This manual is only applicable for installation and operation of the EDC with part number P6DC-( ) / ( ).
1.3 INSTRUCTIONS FOR CONTINUED AIRWORTHINESS
1.3.1 Periodic Maintenance
Regular functional checks as described in Chapter 7 have to be made
in accordance with Aircraft Maintenance Manual Schedule
or
100 flight hours:
For Piston Engine Applications, if no time schedule is available;
150 flight hours:
For turboprop application, if no time schedule is available.
1.3.2 Overhaul Period
No additional overhaul time limitations.
1.3.3 Airworthiness Limitation Section
N/A
2. REFERENCED DOCUMENTS AND ABBREVIATIONS
2.1 REFERENCED DOCUMENTS
Identifier
Doc. N°
Doc title; Revision
/DO-160G/
RTCA DO-160G
Environmental Conditions and
Test Procedures for Airborne
Equipment, Issue G, 2010-12-08
/DO-254/
RTCA DO-254
Design Assurance Guidance for
Airborne Electronic Hardware,
Issue B, 2000-04-19
Table 1: Referenced Documents
For MT-Propeller service literature contact:
MT-Propeller Entwicklung GmbH
Propellerplatz 1
94348 Atting / Germany
Tel.: [phone]
Fax: [phone]
E-Mail: [e-mail]
Internet: www.mt-propeller.com
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ATA 61-07-60
2.2 ABBREVIATIONS
DO, Doc.
Document
EDC
Electrical De-Ice Controller
EMI
Electromagnetic Interference
GND
Ground
IMA
Installation Manual
MDL
Master Documents List
MT
MT Propeller Entwicklung GmbH
P/N
Part Number
OAT
Outside Air Temperature
RF
Radio Frequency
RTCA
Radio Technical Commission for Aeronautics, RTCA, Inc.
VDC
Volts Direct Current
WoW
Weight on Wheels
Table 2: Abbreviations
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ATA 61-07-60
3. SYSTEM OVERVIEW
3.1 GENERAL DESCRIPTION
The Electrical De-Ice Controller (EDC) is a control device which provides a timed control sequence in a
repetitive cycle for operation of propeller De-Icers in an electrical propeller de-icing system.
There are two main Types, the first type of EDC is made to replace old existing De-Ice Timers and delivers
basic functions, the second type is for new installations and delivers advanced functions.
Generally, the EDC provides following main features:
•Supply power to propeller De-Ice boots or other electrically heated airframe parts (heaters).
•Sequencing single and / or multiple heaters or De-Ice boots
•Control, status, and supervisory input / output signals for advanced models
•“Plug&Play” replacement of outdated propeller De-Ice timer devices from third party
manufacturers.
Up to four (depending on model) power outputs can be used to supply electrical De-Ice boots or other
heaters. The EDC is available with different timing sequences. These define the time and order in which
the outputs are enabled.
For control via external systems advanced EDC models accepts discrete input signals e.g. “heater
enable”, “self-test” or “weight-on-wheels”.
To provide functional safety the advanced EDC is equipped with in-device supervisory features:
•Self-test capability
•Over- & undercurrent detection
•Warning & status outputs
These features enable a wide range of applicability especially for modern type aircraft and avionics
systems where additional control and status capability is required.
However, the EDC is also available for retrofit(basic) application where minimum installation effort is
desired. With its formfactor and connector pinout, direct replacement of outdated controllers in many
aircraft is possible.
3.2 MODEL DESIGNATION
P-6 DC –1 / 3E1964-20
1 2 3 4 5
Legend:
1 P = Propeller accessory
2 6 = Manufactured for MT-Propeller by Avionik Straubing Entwicklungs GmbH
3 DC = De-Ice controller
4 1 = Internal Design Version
5 3E1964-20 = Application Number similar to other available Deice Timers (see Table 3)
S/No. 20 DC 003 –F
a b c d
a= Year of Manufacture
b= Electrical De-Ice Timer / Controller
c= Consecutive Number
d= Modification Status
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Figure 1: System Block Diagram for advanced EDC
Figure 2: System Block Diagram for basic EDC (Retrofit)
Figure 2-1: System Block Diagram for basic EDC (Retrofit)
3.3 BLOCK DIAGRAMS
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ATA 61-07-60
3.4 DESCRIPTION OF THE BLOCK DIAGRAM
The simplified block diagram in figure 2 shows a basic EDC system environment.
Connector J1 provides input for supply power and system ground. Furthermore, up to four power supply
output channels are provided by P1 (depends on actual device configuration, see Table 3). For the retrofit
operation P2 needs an internal bridge from Enable to GND must be connected.
For application with additional features, connector P2 in figure 1 provides status, warning, and control
signals.
For information regarding connectors and pinout see chapter 5.
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4. AVAILABLE MODELS
Table 3: Electrical Attributes of available models
4.1 TECHNICAL SPECIFICATIONS
Physical Attributes
Classic
New Generation (NG) (e.g. -5N / -6N)
Weight
800 g max.
350 g max.
Dimensions
(incl. mounts)
137.6 mm length, 108.0 mm width, 71.0 mm height
5.42 inch length, 4.25 inch width, 2.8 inch height
137.6 mm length, 108.0 mm width, 27.5 mm height
5.42 inch length, 4.25 inch width, 1.04 inch height
Mounting
Base Mount, orientation not critical
Install in a vented position.
Base Mount, orientation not critical
Install in a vented position.
Table 4: Physical Attributes
Refer to figure 3 for further information including weight, dimensions and mating connectors.
Qualifications Overview
Classic
New Generation (NG)
Hardware Qualification
DO-254, DAL-C
DO-254, DAL-C
Software Qualification
Not applicable
Not applicable
Environmental Qualification
DO-160G
DO-160G
Altitude
Up to 50.000 ft
Up to 50.000 ft
Operating Temperature
-40°C to +70°C
-55°C to +85°C
Table 5: Qualifications Overview
Refer to chapter 9 for further qualification information.
Electrical Attributes of available models
P/N
System
Voltage
Output
Current
Max. current/
Min. current
Usage
Control
Self-Test/
WoW
Output
Sequence
Total
Cycle
P6DC-1/
3E1964-20
28 VDC
(18,5-33 V)
13A
16 A / 9 A
Threshold
Advanced /
New install
Heater
enable J2
Yes/Yes
C,E
(60s)
120s
P-6DC-2/
3E1964-20
28 VDC
(18,5-33 V)
14A
19 A / 9 A
Threshold
Advanced /
New install
Heater
enable J2
Yes/Yes
C,E
(60s)
120s
P-6DC-3/
3E1964-3
28 VDC
(18,5-33 V)
10A
12.75 A / 7.5 A
Threshold
Advanced /
New install
Heater
enable J2
Yes/Yes
C,break
(90s)
180s
P-6DC-4/
3E1964-3
28 VDC
(18,5-33 V)
10A
12.75 A / 7.5 A
Threshold
Advanced /
New install
Heater
enable J2
Yes/Yes
C,E
(90s)
180s
P-6DC-5N/
3E1964-3
28 VDC
(18,5-33 V)
10A
15.3 A/ 8.0 A
Advanced /
New install
Heater
enable J2
Yes/Yes
C,E
(90s)
180s
P-6DC-6N/
3E1964-3
28 VDC
(18,5-33 V)
14A
tbd
Advanced /
New install
Heater
enable J2
Yes/Yes
C,E
(90s)
180s
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ATA 61-07-60
5. SYSTEM INTERCONNECTIONS
5.1 DEVICE CONNECTORS
5.1.1 Classic
Pin connections for the power connector J1 are shown in table 6.
Pin connections for control and status signals on connector J2 are shown in table 7.*
Connector J1
Pin***
Designation
Description
Levels
I/O
Active
Inactive
A
power supply return
GND
GND
-
Input
B
power supply input
supply voltage
28 VDC
Open
Input
C
supply power to heater
power output, channel 1
28 VDC
Open
Output
D
supply power to heater
power output, channel 3
28 VDC
Open
Output
E
supply power to heater
power output, channel 2
28 VDC
Open
Output
F
supply power to heater
power output, channel 4
28 VDC
Open
Output
G
power supply return
GND
GND
-
Input
Table 6: Pin Assignment of J1
Connector J2
Pin
Designation
Description
Levels
I/O
Active
Inactive
1
Reserved for future use
Reserved for future use
-
-
-
2
Reserved for future use
Reserved for future use
-
-
-
3
Reserved for future use
Reserved for future use
-
-
-
4
Reserved for future use
Reserved for future use
-
-
-
5
Heater enable
Open / GND
GND
-
Input
6
Self-test
Open / GND
GND
Open
Input
7
Reserved for future use
Reserved for future use
-
-
-
8
Warning**
Open / GND (normally open)
GND
Open
Output
9
Reserved for future use
Reserved for future use
-
-
-
10
Shield
Is connected to case
User needed
application
Open
-
11
Reserved for future use
Reserved for future use
-
-
-
12
Reserved for future use
Reserved for future use
-
-
-
13
Reserved for future use
Reserved for future use
-
-
-
14
Reserved for future use
Reserved for future use
-
-
-
15
Reserved for future use
Reserved for future use
-
-
-
16
Reserved for future use
Reserved for future use
-
-
-
17
Reserved for future use
Reserved for future use
-
-
-
18
Reserved for future use
Reserved for future use
-
-
-
19
Reserved for future use
Reserved for future use
-
-
-
20
Shield
Is connected to case
User needed
application
Open
-
21
Reserved for future use
Reserved for future use
-
-
-
22
WOW - weight on wheels
Open / GND -
GND
Open
Input
23
Reserved for future use
Reserved for future use
-
-
-
24
Reserved for future use
Reserved for future use
-
-
-
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DEVICE CONNECTORS CLASSIC (continued)
Pin
Designation
Description
Connection to
I/O
used
unused
25
Reserved for future use
Reserved for future use
-
-
-
26
Reserved for future use
Reserved for future use
-
-
-
27
Reserved for future use
Reserved for future use
-
-
-
28
Reserved for future use
Reserved for future use
-
-
-
29
Reserved for future use
Reserved for future use
-
-
-
30
Reserved for future use
Reserved for future use
-
-
-
31
GND
Ground
GND
-
Input
32
Reserved for future use
Reserved for future use
-
-
-
33
Warning**
Open / GND
(normally closed)
GND
Open
Output
34
Reserved for future use
Reserved for future use
-
-
-
35
Reserved for future use
Reserved for future use
-
-
-
36
Reserved for future use
Reserved for future use
-
-
-
37
Reserved for future use
Reserved for future use
-
-
-
Table 7: Pin Assignment of J2
Notes:
* Leave unused pins open.
** Warning signals on pins 8 and 33 have same source. Different output switch configurations
(normally open or normally closed) can be selected by wiring the correspondent pin.
Explanation: Normally closed configuration is enabled while power off.
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Figure 3: Wiring Diagram for P/N AS01-EDCG2( )-( )
5.1.2 New Generation
Pin connections for the power connector J1 are shown in table 8.
Pin connections for control and status signals on connector J2 are shown in table 9.
Connector
J1
Pin
Designation
Description
Levels
I/O
Active
Inactive
A
power supply return
GND
GND
-
Input
B
power supply input
supply voltage
28 VDC
-
Input
C
supply power to heater
power output, channel 1
28 VDC
OPEN
Output
D
supply power to heater
power output, channel 3
28 VDC
OPEN
Output
E
supply power to heater
power output, channel 2
28 VDC
OPEN
Output
F
supply power to heater
power output, channel 4
28 VDC
OPEN
Output
G
power supply return
GND
GND
-
Input
Table 8: Pin Assignment of J1
Connector
J2
Pin
Designation
Description
Levels
I/O
Active
Inactive
A
GND
Signal GND
GND
-
input
B
TEST, NO
System test, NO
GND
OPEN
input
C
RL1 (NO)
Relay contact, NO
CLOSED
OPEN
output
D
HEAT ACT
Heater lamp
GND
OPEN
output
E
WARN
Warning lamp
GND
OPEN
output
F
WOW
Weight on Wheel
GND
(on ground)
OPEN
(in air)
input
G
RL1 (NC)
Relay contact, NC
OPEN
CLOSED
input
H
RL1 (C)
Relay contact, C
RL1 (NO)
RL1 (NC)
input
J
unconnected
For maintenance use only
n.a
n.a
n.a
K
HEATER ENABLE
Heater activation
GND
OPEN
input
Table 9: Pin Assignment of J2
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5.2 MATING CONNECTORS (CLASSIC)
To interface the device, the following connectors can be used for production of wiring harness.
Connector P1: P/N: (P1:MS3106A20-15S, MIL-DTL-5015) is connected at the EDC J1.
Connector P2: P/N: (P2:D38999/26WD35SN, MIL-DTL-38999) is connected at the EDC J2.
Page 11-2 Revision 3 2023-10-10
Contact Arrangement
view on solder side.
Contact Arrangement
view on crimp side.

ATA 61-07-60
5.3 MATING CONNECTORS (NEW GENERATION)
To interface the device, the following connectors can be used for production of wiring harness.
Connector P1: P/N: (P1:MS3106A20-15S, MIL-DTL-5015) is connected at the EDC J1.
Connector P2: P/N: (P2:85106RC12-10S50, MIL-DTL-26482) is connected at the EDC J2.
Page 11-3 Revision 3 2023-10-10
Contact Arrangement
view on solder side.
Contact
Arrangement view on
crimp side.

ATA 61-07-60
6. INSTALLATION
6.1 RETROFIT / BASIC SETUP
For retrofit plug & play exchange no wiring should be necessary. The device can directly replace the old
device (check the output sequence in Table 3, Pins have to match the old Deice Timer). Mounting holes
and connector J1 should match with the existing parts.
WARNING:
Missmatch of pins may result in damage to the device or aircraft installation.
NOTE:
THE BASIC SETUP COULD ALSO BE USED FOR A NEW INSTALLTION.IN THIS CASE REFER TO CHAPTER 6.2.1-6.2.4.
WARNING:
Verify correct wiring of P2 to prevent possible damage to internal eletronic.
6.2 NEW INSTALLATION / ADVANCED SETUP
P1 and P2 have to be connected according to installation data.
6.2.1 Installation Considerations
Fabrication of a wiring harness is required. Some mechanical and electrical methods and practices are
required for installation of the EDC. Ensure that routing of the wiring does not expose to sources of heat,
RF or EMI interference. Make sure that there is space for the cabling and mating connectors.
Avoid sharp bends in cabling and routing near aircraft control cables.
For input protection, a trip-free circuit breaker shall be installed. Tripping current depends on actual
heating device connected. Refer to heating device supplier data for circuit breaker requirements.
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6.2.2 Location of Installation
The EDC housing may heat up under high ambient temperatures, enduring operation, or high output
current configurations. Make sure that sufficient ventilation is provided to the mounting location and avoid
close contact to devises sensitive to heat.
Orientation of the EDC is not critical.
6.2.3 Wiring Harness
Allow adequate space for installation of cables and connectors. The installer shall supply and fabricate
the cable harness. Use connectors as described in section 5.2 –5.3.
6.2.4 Wiring/Connection
P1 has to be connected according to Table 6 or 8. It is possible to connect only one Ground Pin (Pin A
or G).
The detailed pins for the heating sequence are to be extracted from table 3 under Output Sequence.
The Pin numbers in Table 6 or 8 match the pin layout in chapter 5.2 –5.3.
P2 has to be connected according to Table 7 or 9.
Classic:
Heater Enable (Pin 5) and Ground (Pin 31) have to be wired and connected. The usage and wiring of
Self-test (Pin 6), weight on wheels (Pin 22) and Warning (Pin 8+33) is optional. Both warning output
pins (Pin 8 normally open, Pin 33 normally closed) can be used and will trigger on the same conditions.
The Pin numbers in Table 6 match the pin layout in chapter 5.2
New Generation:
Heater Enable (Pin K) and Ground (Pin A) have to be wired and connected. The usage of the remaining
Pins and function is optional. (see table 9)
7. OPERATION
7.1 GENERAL OPERATION INFORMATION
As the EDC is designed for use as retrofit replacement but also for new installations, there are two main
operation “modes” depending on model type. The Basic/Retrofit models and the Advanced models.
NOTE:
OPERATION MODE DEPENDS ON ACTUAL CONFIGURATION,REFER TO TABLE 3FOR AVAILABLE CONFIGURATIONS.
7.2 RETROFIT/BASIC OPERATION (P1 WIRED, P2 PIN NOT ENABLE NOT WIRED)
For retrofit use the EDC is operated without any additional input and output signals.
To enable heater operation, supply power must be applied to the EDC. The heater sequence from Table
3 starts immediately after power is supplied to the EDC. After power supply off, the sequence is reset.
7.2.1 Functional Checks referring to 1.3.1
Lock brakes and operate engine at about 75% of max. RPM. Activate de-icing system and monitor the
ammeter. The needle should rest inside within the shaded area during the cycle. The ammeter flickers
during the switch to another cycle. The cycle time (ammeter flicker to ammeter flicker) should be
checked against the specification in table 3.
This procedure could be performed at any time the propeller is operating and OAT is low enough to
avoid overheating damage of the Deice-Boots.
The Pilot is free to perform this procedure anytime, but has to observe the OAT to avoid damage to the
Deice-Boots during high OATs.
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7.3 ADVANCED/NEW INSTALL OPERATION WITH I/O FEATURES (J1 WIRED, J2 WIRED)
This mode makes use of additional features like external heater-enable, Self-test activation or weight-on-
wheels deactivation. An overview of this features follows in table 10.
After power supply the EDC will perform a Self-test to check the correct De-Icing function for 3 - 7 seconds.
After that the heating sequence can be started by “Heater-Enable”.
Function
Description
Classic
New Generation (NG)
Heater-Enable
Activates heater outputs if Heater-Enable is grounded
Activates heater outputs if Heater-Enable is
grounded
Self-Test
Triggers the device Self-test if activated (connected to
ground). The usage is optional.
The TEST function can be applied at any time
(on GND or airborne).
Holding the TEST-BUTTON activates the Lamp-
test (Warn and Heat LED light up).
Releasing the TEST-BUTTON activates the Self-
test.
The Device will clear the warning lamp if the
applied load is in range.
After Self-test the device will continue operating.
WoW
Deactivates heater outputs if WoW signal active
(connected to ground). The usage is optional.
Deactivates heater outputs if WoW signal active
(connected to ground). The usage is optional.
Warning Output
1
Normally closed (connected to ground). Indicates
device failures,failure of Deice-System (Deice Boots,
Wires, etc…) and status as described in 7.3.5. Can
be used to detect loss of supply power. The usage is
optional.
Normally open. In case of a fault pulled to
ground. The usage is optional.
Warning Output
2
Normally open (not connected to ground). Indicates
device failures, failure of Deice-System (Deice Boots,
Wires, etc…) and status as described in 7.3.5. The
usage is optional.
n. A.
Relay Output
n. A.
SPDT relay output is available. The relay
activates with power on. Can be used to detect
loss of supply power. The usage is optional.
Table 8: Special Functions
7.3.1 Functional checks referring to 1.3.1
The Self-test described under 7.3.3 covers all needed checks.
Classic Device: It could be performed anytime the De-Icing is not operating.
New Generation: It could be performed anytime the Device is powered up.
If the Warning Output remains off, the Deicing function is valid.
7.3.2 Heater-Enable
If Heater Enable pin is grounded the heating sequence is activated.
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