Endress+Hauser Proline Promass F 500 - Page 39

Proline Promass F 500 Modbus RS485 Electrical connection
Endress+Hauser 39
Operating temperature When mounted in a fixed position: –50 to +105 °C (–58 to +221 °F); when cable
can move freely: –25 to +105 °C (–13 to +221 °F)
Available cable length Fixed: 20 m (65 ft); variable: up to maximum 50 m (165 ft)
Hazardous area, Ex Zone 1, Class I, Division 1
Standard cable
A standard cable can be used as the connecting cable.
Standard cable 4, 6, 8 cores (2, 3, 4 pairs); twisted pair with common shield
Shielding Tin-plated copper-braid, optical cover ≥ 85 %
Capacitance C Maximum 730 nF IIC, maximum 4.2 µF IIB
Inductance L Maximum 26 µH IIC, maximum 104 µH IIB
Inductance/resistance
ratio (L/R)
Maximum 8.9 µH/Ω IIC, maximum 35.6 µH/Ω IIB (e.g. in accordance with IEC
60079-25)
Loop resistance Power supply line (+, –): maximum 5 Ω
Cable length Maximum 150 m (500 ft), see the following table.
Cross-section Cable length Assembly
2 x 2 x 0.50 mm
2
(AWG 22)
50 m (165 ft) 2 x 2 x 0.50 mm
2
(AWG 22)
A
B
• +, – = 0.5 mm
2
• A, B = 0.5 mm
2
3 x 2 x 0.50 mm
2
(AWG 22)
100 m (330 ft) 3 x 2 x 0.50 mm
2
(AWG 22)
A
B
• +, – = 1.0 mm
2
• A, B = 0.5 mm
2
4 x 2 x 0.50 mm
2
(AWG 22)
150 m (500 ft) 4 x 2 x 0.50 mm
2
(AWG 22)
A
B
• +, – = 1.5 mm
2
• A, B = 0.5 mm
2