Food & beverage cables: the hygienic zone sets the protection, not the cable type

5 min read

In food & beverage plants, the environment is often more critical than the electrical load. Daily wash-downs with aggressive agents can take up to 30% of machine operating time, on top of steam, high-pressure jets and thermal cycles ranging from refrigeration to heating processes.

Jackets typically fail in three ways: swelling from oil and grease absorption; micro-cracking from chemical or mechanical stress, which then harbours bacteria; and hardening from plasticiser loss after thermal shock. None of these is random: each results from a mismatch between jacket material and operating conditions.

Three zones, three protection levels. MOTIONCLEANLINE starts from the hygienic zone, not from the cable type. ULTRAGUARD is for zone 1 (HDZ, Hygienic Designed Zone): direct or indirect product contact, CIP/SIP cycles, wash-downs above 100 bar and steam, non-porous jackets stable up to +125 �C. POWERSHIELD is for zone 2 (splash): aerosols, sprays, detergents and humidity without direct food contact, typical of filling, dosing, cutting and primary packaging. TECHLINE is for zone 3 (technical): end-of-line palletising, conveying, electrical cabinets, where mechanical stress and the performance/cost ratio prevail.

The functional family stays the same: servo, bus, power, VFD and control cables are available in all three versions. A servo or bus cable can therefore cross several zones without changing the system architecture; only the jacket and materials change. The right choice depends on three independent variables: hygienic zone, chemical profile (pH, temperature, contact time, number of cycles) and mechanical profile (static, flexing, torsion).

ECOLAB chemical validation. All MOTIONCLEANLINE jackets are ECOLAB certified through immersion tests with real detergents, acids and sanitisers; swelling, hardening, cracking and mass variation are measured. ULTRAGUARD reaches Class IV (highly suitable) for acids, alkaline agents, oxidising agents and steam; POWERSHIELD reaches Class III for acids, alkaline and oxidising agents and Class IV for steam. TECHLINE is not suitable for acids and steam: it is intended for dry zones.

Dynamic performance. ULTRAGUARD: minimum bending radius 7.5 � �, 300 m/min, 15 m/s�, 10 million cycles. POWERSHIELD: 10 � �, 240 m/min, 10 m/s�, 5 million cycles. TECHLINE: 12 � �, 180 m/min, 1 million cycles.

Compliance. ULTRAGUARD and POWERSHIELD materials comply with FDA 21 CFR 177 (on request for TECHLINE); all versions carry UL/CSA for export to North America and comply with RoHS and REACH. ULTRAGUARD is also halogen-free, non-flame-propagating and low-smoke. For hygienic machine design, the references remain EHEDG, DIN EN ISO 14159 and DIN EN 1672-2.

At installation. In hygienic areas, avoid tight plastic cable ties and bundling: they create recesses that are hard to clean. Use smooth metal clamps, open trays, slopes that prevent pooling and access for visual inspection. Hybrid OCT configurations reduce the number of cables and therefore the surfaces to sanitise.

Send us the installation zone, the detergents used with concentrations and temperatures, and the type of motion: we will specify the right version.