Jaquet FT3000 Speed measurement system

Jaquet  FT3000 Speed measurement system

System documentation FT 3000 :

• Operating instructions  FT 3000

• Operating instructions sensor

• Rack 19 ¨  description

• Bloc function description

• System configuration

• Connection diagram

Applications

FT 3000 tachometers are used to monitor and measure frequencies in the range 0 to 30000Hz eg from frequency proportional

sources such as rotational speed.

The FT 3000 family comprises of the following modules:

• Monitoring module (Motherboard) FTFU 3024

with input card -E01  FTFU 3024- E01  Art. Nr. 377Z-03981

with input card -E02  FTFU 3024- E02   Art. Nr. 377Z-03982

with input card -E03 FTFU 3024- E03  Art. Nr. 377Z-03983

with input card -E04   FTFU 3024 -E04  Art.-Nr. 377Z-05855

• Trip Chain Control card   FTBU 3034   Art. Nr. 377Z-05030

• Frequency to current converter   FTW 3013   Art.Nr.377Z-03984

(Auxiliary module)

• Relay card (Auxiliary module)   FTV 3090   Art. Nr. 377Z-03985

• Comms module    FTK 3072   Art. Nr. 377Z-03986

• PSU 116/230Vac    FTZ 3061   Art. Nr. 377Z-04065

• PSU 24/48Vac    FTZ 3062   Art. Nr. 377Z-04073

• PSU 14...70Vdc    FTZ 3064   Art. Nr. 377Z-04074

• PSU 75...372Vdc    FTZ 3065   Art. Nr. 377Z-04075

• Mains filter (2 wire)    FTZ 3069   Art. Nr. 804D-35886

FT 3000 3 channel speed monitoring and over speed protection systems comprise of 3 independent channels, from speed pick

ups through to limit signalling. High integrity operation is provided for in the rack through the use of 2 redundant power

supplies to each module via diode decoupling. Rack module supply requirements are matched to the incoming supply by the 2

redundant power supplies.

4 Construction

The modules are plug in units in a 19" rack, with height 3 HE and with 4. 12 or 20 TE in accordance with DIN 41494.

Compatible card frames with up to 21 locations at 4 TE are used for mounting and wiring the modules.

The card frames are

built by JAQUET to customer requirements. Connections for speed sensors, control and output signals along with power

supplies are normally provided at the back via screw terminals or Termi-Point connections.

The setting of measuring range,

monitoring and relay parameters is via front panel RS 232 interface on  the FTK 3072 comms module to a PC.

This module

controls the data flow between the PC and individual modules in the rack (RS 485 rack bus). The parameters are stored in

EEPROM’s and protected against mains failure.

Statistics

Mean Time Between Failure for each channel (without voting)

Mean Time Between Failure for each OSP channel (FTFU 3024)

Mean Time Between Failure for each signal monitoring channel (FTBU 3x34)

PFHg  according to IEC 61508-2

DC % according to IEC 61508-2

: 2.69e-8 fits

: 94.23%

: 188683 hours #  21.5 years

: 230700 hours #  26.0 years

: 1036000 hours # 118 years

Life duration for the system is 20 years. During this period the data integrity of the programable devices are garanted, this time

is equivalent to the MTBF of the channel. After this period the overspeed protection system must be replaced.

6.2 Special specifications :

6.2.1 CSA specifications

• Pollution Degree 2 environment

• Installation Category II

• Altitude : sea level

• Humidity : 0%...90% condensation to be avoided

• Electrical supply 24 Vdc, max. 8A, Double or Reinforced insulated from mains

• The Ft3000 rack system must be installed in a indoor environment.

• Operating temp -5...+40ºC