Description Valid for Hägglunds CA, CB, CBP, CBM Maximum flow 800 l/min Features Very short stop time of the hydraulic drives Special application for roll mill application Ideal from safety point of view Performance level PL d Consists of valve VQCB 800 and control box QECB Product description Hägglunds quick stop unit is designed to be used on hydraulic drives to quickly stop the rolls without stopping the main electric motor. There is no need of a mechanical brake. The stopping function is instead achieved by blocking the oil flow from the Hägglunds hydraulic motor. A very short braking time is possible due to small inertia of the motor and quick response from the hydraulic valve, i.e. 100 ... 150 ms From safety point of view regarding quick stop, Hägglunds quick stop functionality consisting of Hägglunds hydraulic motor, quick stop valve VQCB 800 and electrical control unit QECB is an ideal combination. The components are designed according to following safety regulations for rubber and plastic machines. The European standard EN 1417+A1;2008/AC;2009 ltem 3.3 and 5.5.1.4.1,b For rubber and plastic machines. Rules and requirements for two roll mills. The standard Code of Federal regulations (USA) Occupational safety and health administration 29 CFR chapter XVII (July 1. 1997-edition) §1910.216 that cover mills and calendars in the rubber and plastic industry. Reliability characteristics MTTFd according to EN ISO 13849 MTTFd = 31 years (VQCB 800 + QECB) Type code ln order to identify Hägglunds equipment exactly, the following ordering code is used. These ordering codes should be stated in full in all correspondence e.g. when ordering spare parts. 01 02 03 04 05 1) 06 1) 07 08 09 VQC B 800 / QEC B 01 Hydraulic stop valve VQC VQC 02 Version B Nominal flow 03 800 l/min 800 Electric voltage 04 Standard 24 VDC 1 110 VAC (not in combination with QEC) 2 Modification 05 1) 0 ... 9 Design 06 1) Standard 00 Special index (Customer specific adaption) 01 ... 99 Quick stop electronic control QEC 07 QEC Version 08 B Main voltage 09 100 / 200 VAC 1 115 / 230 VAC 2 1) To be filled in by Bosch Rexroth AB, Mellansel. Symbols/Circuit diagrams Block diagram, quick stop unit Safety Instructions Warning signs In this manual you will find the following signs which indicate a potential hazard, which can or will cause personal injury or substantial property damage. Depending on the probability if the hazard, and how serious the injury or property damage could be, there are three levels if classification. Warning sign (warning triangle) Draws attention to the hazard Signal word Identifies the degree of hazard Type of risk Specifies the type or source of the hazard Consequences Describes the consequences of non-compliance Precautions Specifies how the hazard can be prevented The signal words have the following meaning: Warning sign, signal word Meaning DANGER Indicates a hazardous situation which, if not avoided, will result in death or serious injury. WARNING Indicates a
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