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Datasheet

Subject: VA91-BBL314-65A Datasheet Revision: 001

All contents are for reference only and are subject to change without notice Any unauthorized use and/or copy of this document is strictly forbidden

\\GALILEO\ELETTRONICA\- PROGETTI\SBL300\PERSONALIZZAZIONI\01284- KBL49 -COMMSCOPE\DATASHEET\VA91-BBL314-65A DATASHEET 001.DOCM

Boschesi Roberto template number / name: / datasheet 000.dotm

+39 0522 731 859 date of origin: 24.05.2011 SPAL Automotive srl last change: 10.07.2012 Via per Carpi 26/b - 42015 Correggio (R.E.) - Italy page 1 of 17 pages

1.1 Index of contents 1.1 Index of contents 1 1.2 Index of tables 1 1.3 Index of figures 2 1.4 Abbreviations and acronyms 3

2 System Data 4

2.1 3D Fan rendering 4 2.2 Electrical Interface 5

2.2.1 Speed feedback / diagnostic output 7

2.2.2 PWM input 8

2.2.2.1 Active Low PWM input 8

2.2.2.2 Continuous setting of fan speed 9

2.2.3 Supply Voltage 10

2.2.4 Fuse protection 10

2.2.5 Power supply residual ripple 10

2.2.6 Standby current 10

2.2.7 Reverse polarity protection 10

2.3 Protections 11 2.3.1 Safe standby mode 11

2.3.2 Failure mode 11

2.3.2.1 Overload / overcurrent protection 11

2.3.2.2 Locked rotor protection 11

2.3.2.3 Phase short circuit protection 11

2.3.2.4 Internal electronic power-on self test failure 12

2.3.2.5 Internal hardware error 12

2.3.3 Reverse polarity protection 12

2.3.4 Load dump protection 12

2.4 Typical ratings 13

2.5 Indicative thermal derating curve 13 2.6 Standards and Directives 14

2.7 Sealing 14 2.8 2D assembly drawing 15 2.9 Airflow performances 16

3 Document change history 17

1.2 Index of tables Table 1: Units of measurements table 3

Table 2: Acronyms Table 3

Table 3: Wire pinout description and data. 5

Datasheet






Table 4: SPEED FEEDBACK Output characteristics 7

Table 5: DIAGNOSTIC output characteristics 7

Table 6: Input PWM parameters 8

Table 7: Fan RPM specifications 9

Table 8: Supply Voltage specifications 10

Table 9: Load dump parameters 12

Table 10:Indicative normalized derating curve for Axial fan VA91 - BBL314 - 65A. 13

Table 11: Standards and directives 14

Table 12: Document change history 17

1.3 Index of figures Figure 1: ØF385 mm Axial fan VA91 - BBL314 - 65A ............................................................................. 4

Figure 2: DELPHI 6 pin connector – terminal view ................................................................................. 5

Figure 3: Functional circuit needed at vehicle side. ................................................................................ 6

Figure 4: Conceptual schematic of SPEED FEEDBACK output signal .................................................. 7

Figure 5: Conceptual circuit of PWM input signal pin. ............................................................................. 8

Figure 6; PWM/speed transfer function. .................................................................................................. 9

Figure 7: Reverse polarity parameters. ................................................................................................. 10

Figure 8: Axial fan VA91 - BBL314 - 65A 2D technical scheme. .......................................................... 15

Figure 9: Axial fan VA91 - BBL314 - 65A Airflow performances ........................................................... 16

Datasheet






1.4 Abbreviations and acronyms Units of measurement

Unit Physical Quantity Prefix Dimension

% Percent Proportionality M 106 mega

Ω Ohm Electrical Resistance k 103 kilo

°C Celsius degrees Temperature m 10-3

milli

A Ampere Current μ 10-6

micro

h hours Time n 10-9

nano

Hz Hertz Frequency p 10-12

pico

min minute Time

Pa Pascal Pressure

rpm Revolutions per minute Rotation frequency

sec second Time

V Volt Voltage

W Watt Power

Table 1: Units of measurements table

Acronyms

Key Word Description

AMPL_IN Amplitude PWM input signal

CFC Chlorofluorocarbon

DTY_IN Duty cycle PWM input signal

ECU Engine Control Unit

FREQ_IN Frequency PWM input signal

I_SOA Safe Operating Area current

IGN Ignition (KL15)

PCB Printed Circuit Board

PWM Pulse Width Modulation

Ri Input Resistance

RPMMAX Maximum speed reached by the fan

RPMMIN Lower speed reached by the fan

T Temperature

Ub Supply voltage

Un Nominal supply Voltage

V Direct current voltage

VBATT+ Positive power supply

VBATT- Negative power supply

VSF Speed feedback Voltage

Table 2: Acronyms Table

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2 System Data

2.1 3D Fan rendering

Figure 1: ØF385 mm Axial fan VA91 - BBL314 - 65A

Datasheet






2.2 Electrical Interface

Figure 2: DELPHI 6 pin connector – terminal view

Connector part number

Delphi 6Pin connector 12185126 with lock 12185000

Connector pinout description

Pin number 1 2 5 3

Identification VBATT+ VBATT- SPEED FEEDBACK

PWM_IN

Type Power Power OUTPUT INPUT

Wire Color BLACK BROWN BLUE YELLOW

Description Positive Battery Ground Speed feedback

Fan speed set point from PWM signal

Sealing 12048086 12048086 12048087 12048087

Pin 12185237 12185237 12185129 12185129

Sect. [mm2] 2.5 2.5 0.75 0.75

Notes Speed/30 NEGATIVE

Table 3: Wire pinout description and data.

1 5

2 6

3

4

Datasheet






PWM

PWM /

diagnostic

conditioning

interface

Rpu_pwm

VBATT(-)

VBATT (+)

SPEED FEEDBACK

Conditioning

interface for

ECM Processor

Vpu_diag

ECMFAN

CONNECTOR SBL FAN DRIVE

Figure 3: Functional circuit needed at vehicle side.

Datasheet






2.2.1 Speed feedback / diagnostic output In normal operation mode, the SPEED FEEDBACK output will drive a frequency proportional to the fan speed. When an anomaly is found the output is driven low, until the electronic control drive unit must be reset (by means of the PWM input signal at 0 % duty cycle and/or by cycling the power supply). Simplified block diagram:

Diagnostic

conditioning

interface

VBATT(-)

VBATT

(+)

SPEED FEEDBACKConditioning

interface for

ECM Processor

Vpu_diag

ECM SBL FAN DRIVE

Vsf

Figure 4: Conceptual schematic of SPEED FEEDBACK output signal

Conditions Characteristic valid at TAMB = 23 ± 5 °C and VBATT = 26 ± 0.2 V at connector, unless otherwise specified

Parameters Min Typ Max Unit Denomination

SPEED FEEDBACK duty cycle -5 50 +5 %

SPEED FEEDBACK output frequency (fan running in normal direction)

-5% Fan

speed/30 +5% Hz

SPEED FEEDBACK output frequency (fan stopped)

0 Hz

SPEED FEEDBACK output frequency (fan running in reverse direction)

-10% 10 +10% Hz

SPEED FEEDBACK Low level voltage 1 V VSF ON

SPEED FEEDBACK High level voltage Vpu_diag V VSF OFF

SPEED FEEDBACK input current 1 10 mA

SPEED FEEDBACK short to Vbatt+ protection YES

Table 4: SPEED FEEDBACK Output characteristics


Diagnostic out signal

Error Diagnostic state Description

STAND BY / NO ERROR OFF (Vpu_diag)

SAFE STAND BY MODE OFF (Vpu_diag) see §2.3.1

FAILURE MODE ON (<1 V) see §2.3.2

Table 5: DIAGNOSTIC output characteristics

Datasheet






2.2.2 PWM input Simplified block diagram:

PWM

conditioning

interface

>2Kohm

VBATT (-)

VBATT (+)

PWM

Conditioning

interface for

ECM Processor

ECM

SBL FAN DRIVE

Figure 5: Conceptual circuit of PWM input signal pin.

The control unit output connected to the fan PWM INPUT must be of the “open collector” type.

2.2.2.1 Active Low PWM input


PWM Input

Parameters Min Typ Max Unit Denomination

PWM frequency range 100 - 500 Hz

PWM duty cycle range 0 100 %

PWM high level voltage 12 Vbatt(+) V VIH

PWM low level voltage 0 1 V VIL

PWM resolution 1 %

PWM accuracy 1 %

PWM input current -10% 7.1 +10% mA

Table 6: Input PWM parameters

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2.2.2.2 Continuous setting of fan speed

The fan speed is set by means of the duty-cycle value of the PWM input signal, as depicted in the following chart.

A steady low voltage is regarded as 100% duty cycle.

A steady high voltage is regarded as 0% duty cycle.

Transfer function @ PWM high level voltage=Un, PWM low level voltage=0 V

Duty Cycle definition

Duty cycle is defined as follow:

Where TL and T refers to left figure T: PWM input waveform period TL: low level time in a single period

Figure 6; PWM/speed transfer function.

Fan speed conditions

Parameters Value Unit Denomination

Nominal Minimum speed 800 rpm MIN SPEED

Nominal Maximum speed (guaranteed for Ub ≥ 26 V measured at motor connector)

2500 rpm MAX SPEED

Maximum reverse speed rpm MAX REV SPEED

Table 7: Fan RPM specifications

Note: it is suggested to drive the fan at 12% PWM duty cycle to get it rotating backward at MAX REV SPEED.

T

TL

MIN_SPEED

MAX_SPEED

95%100%

-MAX_REV_SPEED

Fa

n S

pe

ed

[rp

m]

PWM Duty

Cycle25%

0

15% 18%98%

6% 9%

90%

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2.2.3 Supply Voltage Parameters Min Typ Max Unit Denomination

Nominal supply voltage 26 V Un

Operating supply voltage range (measured at motor connector)

16 32 V Ub

Table 8: Supply Voltage specifications

2.2.4 Fuse protection An automotive fuse according ISO8820 part 3 must be used in the vehicle wire harness. Depending on the application of the fan, it will be necessary to define and verify the correct fuse level by the customer (due to the length of the vehicle cable harness, cross section of the power wires, fuse type).

2.2.5 Power supply residual ripple The maximum value of power supply rms ripple acceptable for the motor fan is 1%. In case of application with high residual ripple values, please contact SPAL in order to find the suitable solution for your specific requirements.

2.2.6 Standby current Standby current is < 100 μA when the fan is disabled (PWM duty = 0 %).

2.2.7 Reverse polarity protection Parameters Value Unit

Reverse supply voltage -26 V

Temperature Room temperature K

Time 2 min

Figure 7: Reverse polarity parameters.

Wire harness with fuse (see § 2.2.4). Functional status class C as defined in ISO 16750-1 (device fully functional after test).

Datasheet






2.3 Protections

2.3.1 Safe standby mode The electronic control drive unit switches OFF its power stage (stopping the fan) if one of the following conditions is detected:

Overvoltage

Undervoltage

Overtemperature

Undertemperature The fan gets back to normal operation as soon as the electronic control drive unit detects that the temperature and supply voltage level are within the rated operating range.

2.3.2 Failure mode The electronic control drive unit switches OFF permanently its power stage (stopping the fan) if one of the following conditions is detected:

Overload / overcurrent (§ 2.3.2.1)

Locked rotor (§ 2.3.2.2 )

Short circuit on motor phases (§2.3.2.3)

Internal electronic power-on self test failure (§ 2.3.2.4)

Internal hardware error (§ 2.3.2.5) In order to exit the failure mode, the electronic control drive unit must be reset by means of the PWM input signal and/or by switching OFF the power supply.

2.3.2.1 Overload / overcurrent protection During fan operation, current flowing into motor phases is continuously measured and compared with the maximum accepted value. Such value is calculated according to functional parameters as power supply voltage, motor speed etc. This in order to guarantee that the fan works continuously inside a safe operating area. If the motor phase current exceeds the maximum admitted value, the electronic control drive unit automatically limits the current to such maximum accepted value (current limiting mode). If the current limiting mode is permanently active for more than 1 minute, the power stage is switched OFF for 30 sec. After this wait time the power stage is re-switched ON and:

1. if overcurrent is still detected, the electronic unit re-activates the current limiting mode and switches OFF its power stage after 1 minute. After 5 sequential attempts of current limiting the power stage is permanently switched OFF (until reset).

2. if the overload condition disappears, the electronic unit doesn’t re-activate the current limiting mode. If this condition is maintained for at least 1 minute, the overload counter is reset and the fan gets back to normal operating mode.

2.3.2.2 Locked rotor protection If a permanent locked rotor condition is applied before or during motor operation, 10 startup attempts are made in sequence with off-time intervals increasing by step of 3 sec (3-6-9-12-15-18-21-24-27 sec) between two following attempts. At the end of the last attempt, the electronic unit switches OFF permanently its power stage until reset and activate diagnostic signal to ECU.

2.3.2.3 Phase short circuit protection The electronic control drive unit is protected against accidental short circuits between motor phase wires. At startup and/or during operation, if two or more motor phase leads are short circuited, the fan operates as follows: 1. the electronic control drive unit switches OFF its power stage (stopping the fan) 2. the electronic control drive unit makes 10 startup attempts with OFF time intervals increasing by step of 3 sec (3-6-9-12-15-18-21-24-27 sec) between two following attempts

Datasheet






3. if the 10 startup attempts fail, the electronic control drive unit switches OFF permanently its power stage (until reset) and activate diagnostic signal to ECU.

2.3.2.4 Internal electronic power-on self test failure If a power-on or wake-up error condition is detected the electronic unit switches OFF permanently its power stage until reset and activate diagnostic signal to ECU. The maximum time of these checks is 1 second.

2.3.2.5 Internal hardware error If an internal hardware error condition is detected during motor operation, 10 startup attempts are made in sequence with off time intervals increasing by step of 3 sec (3-6-9-12-15-18-21-24-27 sec) between two following attempts. At the end of the last attempt, the electronic unit switches OFF permanently its power stage (until reset) and activate diagnostic signal to ECU.

2.3.3 Reverse polarity protection By means of the internal reverse polarity protection MOSFET. The electronic unit is protected against either temporary or permanent application of a reverse polarity on the power supply line. In this situation, the motor remains stopped, without fault output signal activation.

2.3.4 Load dump protection Load dump tests are performed according to ISO7637-2 (2004) specifications, par. 5.6.5.

Load dump testing parameters

Pulse type: 5b (suppressed)

Parameters Value Units

Battery voltage (Ua) 24 V

Pulse peak voltage (Ua+Us) 58 V

Input resistance (Ri) 2 Ω

Impulse duration (td) 350 ms

Rise time (tr) ≤10 ms

Pulses number 5 #

Time interval between pulses 60 sec

Table 9: Load dump parameters

Datasheet






2.4 Typical ratings Operating temperature range: -37°C÷ +85°C (see following thermal derating curve)

Storage temperature range: -40°C ÷ +120°C

Lifetime: 10,000 ÷ 30,000+ hours depending on mission profile

2.5 Indicative thermal derating curve

Normalized derating curve

Quasi static conditions Ub = V

Speed Temperature

MIN_SPEED 800 rpm TDERATING 65 °C

MAX_SPEED 2500 rpm TMAX 85 °C

Table 10:Indicative normalized derating curve for Axial fan VA91 - BBL314 - 65A.

Thermal derating curve in “quasi-static” condition.

Quick ambient temperature variations may not affect fan speed, based on thermal inertia of the system.

TDERATING TMAX

MAX_SPEED

MIN_SPEED

0

100

0,7 0,8 0,9 1

No

rmal

ize

d S

pe

ed

[%

]

Temperature [°C]

Normalized derating curve

INDICATIVE

marisab

Font monospazio

Datasheet






2.6 Standards and Directives The fan complies with the following standard / directives

Standard Code Description

72/245/EC (2006/28/EC) Automotive EMC directive

2002/95/EC RoHS Restriction of Hazardous Substances Directive

Table 11: Standards and directives

2.7 Sealing Motor tested and certified for IP6K9K and IP68 protection.

Datasheet






2.8 2D assembly drawing Axial fan assembly drawing

Figure 8: Axial fan VA91 - BBL314 - 65A 2D technical scheme.

All dimensions are expressed in mm.

Use M6 screws for fixing

Datasheet






2.9 Airflow performances Axial fan performance curve Test number: #

Figure 9: Axial fan VA91 - BBL314 - 65A Airflow performances

Supply Voltage 26 V

Temperature Ambient Temperature

Fan speed Full speed

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

0

50

100

150

200

250

300

350

400

0 500 1000 1500 2000 2500 3000 3500

———

Cu

rre

nt

[A]

Pre

ssu

re [P

a]

Airflow [m³/h]

VA91-BBL314-65A

Datasheet






3 Document change history Initial document author: Boschesi Roberto / +39 0522 731 859 Latest revision: 001

Document author Date Revision Comment

Boschesi Roberto 30.08.2011 000 Initial Version

Boschesi Roberto 10.07.2012 001 Changed product identifier (BBL314). Changed maximum pwm high level voltage. Removed screws tightening torque. Reduced storage temperature range. Updated 2D assembly drawing. Minor changes

Table 12: Document change history

Document status: preliminary

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