Manual VEK S4
20 03/09 FEIG ELECTRONIC GmbH
6 Technical data
Supply voltage: 12 to 24 V DC +/- 20 %
SELV, limited power sources according to EN 60950-1
Power consumption: typ. 900 mW, max. 1,2 W
Ambient temperature: -20 °C to +70 °C
Storage temperature: -40 °C to +85 °C
Humidity: max. 95% non-condensing
Loop inductance range: 25 – 1200 µH
recommended loop inductance 80 – 300 µH
Working frequency 30 – 140 kHz
Sensitivity
max. loop cable length 300 m
max. loop internal resistance
30 Ω (incl. cable)
Loop inputs galv. isolated (1kV),
90V gas tube arresters to PE contact
Cycle time 8 ms
Loop geometry Head gap: 250 cm and 400 cm
Length: 100 cm and 250 cm
Both loops must have an identical design.
Speed measurement Measuring range 10 km/h to 255 km/h
Tolerance under 100 km/h, +/-3 km/h
Tolerance over 100 km/h, +/-3%
Resolution 1 km/h
Length measurement 10 dm to 250 dm for constant vehicle speed
Tolerance +/- 3 dm
Vehicle classification 8+1 classes Car, car with trailer, truck, truck with trailer, van, bus,
motorcycle, articulated vehicle and unclassifiable vehicle
Outputs Low-Side Switch
Open Drain, short-circuit protected
max. 45 V / 350 mA, R
on
= 1,7 Ω
Enclosure Plastic housing, IP 30 for DIN rail mounting
Polyamide PA 6.6, blue
22.5 x 99 x 114.5 mm (W x H x D, excl. connector)
Integrated function ground contact via DIN rail
Weight 125 g (260 g with packaging)
Connections
Loops 1-4,
altern. CAN-/RS485- Bus and
supply voltage
Open Drain outputs 1-4 (Option)
4-pole plug terminals, 0.2 – 2.5 mm² (AWG 24-14)
Phoenix Combicon MSTBT 2.5, blue
Supply voltage, RS485,
Synchronisation
10-pole IDC plug with flat cable on frontside
Interface
RS 485 2400, 4800, 9600 Baud, 19200, 38400, 57600 Baud, 8E1
Termination 120 Ω, Pull-up / Pull down 470 Ω switchable
CAN 100, 125, 250 kBit/s, 500, 800 kBit/s, 1 MBit/s,
Termination 120 Ω switchable
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