Expansion modules - Automatech

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Products Expansion modules PNOZ ml1p 2.3 Function description The PNOZ ml1p connection module is used for the safe transfer of 32 virtual inputs and 32 virtual outputs between two PNOZmulti systems. One connection module is assigned to each base unit. Data is exchanged cyclically. The function of the inputs and outputs on the safety system depends on the safety circuit created using the PNOZmulti Configurator. A chip card is used to download the safety circuit to the base unit. The base unit has 2 microcontrollers that monitor each other. They evaluate the input circuits on the base unit and expansion modules and switch the outputs on the base unit and expansion modules accordingly. The online help on the PNOZmulti Configurator contains descriptions of the operating modes and all the functions of the PNOZmulti safety system, plus connection examples. Data exchange: Data is exchanged cyclically. After the end of a PNOZmulti cycle, each base unit sends its output data to its connection module. This output data is immediately sent to the connection module on the other base unit. At the same time, the base unit reads the input data from the connection module. Connection of multiple base units: Any number of base units can be connected via PNOZ ml1p connection modules. Two PNOZ mI1p are required for the connection between two base units. However, only a maximum of 4 connection modules may be connected to any one base unit. Data transmission time: The t BUS data transmission time is the time between the virtual output at base unit 1 being set and the virtual input at base unit 2 becoming available (see "Technical details"). The maximum reaction time for series connection of n base units is the time between the activation of a safety function at the input on one base unit and the switching of an output on the connected base unit. The maximum reaction time t SUM includes the following times: t ON : Input delay = 4 ms t COND : Switch-off delay of semiconductor output = 30 ms t REL : Switch-off delay of relay output = 50 ms t BUS : Data transmission time between two base units = 35 ms n: Number of connections between base units The maximum reaction time t SUM for series connection of n base units With semiconductor outputs: tS UM = t ON + (n * t BUS ) + t COND With relay outputs: t SUM = t ON + (n * t BUS ) + t REL Input delay and switch-off delay are only included once in the reaction time. The data transmission time between the connection modules is multiplied by the number of connections. Please refer to the connection examples under “Preparing for operation”. Caution! For signals that are forwarded or received via the PNOZ ml1p, the overall reaction time, e.g. the maximum reaction time of the series connection of n base units, must always be considered in the risk assessment. The risk assessment must consider all hazards as regards the reaction time and the safety distance. The overall reaction time must not delay the transfer to a safe condition by more than the permitted time. Virtual inputs and outputs: Inputs and outputs for both PNOZmulti systems are assigned in the PNOZmulti Configurator. Inputs and outputs with the same number are assigned to each other, e.g. output o5 on one PNOZmulti system to input i5 on the other PNOZmulti system. Wiring The wiring is defined in the circuit diagram in the Configurator. Inputs and outputs can be selected there. Please note: Information given in the “Technical details” must be followed. Use copper wire that can withstand 75 °C. Connect the inputs and outputs from two PNOZ ml1p with a 4-core shielded cable. The cables must be twisted in pairs (see “Preparing for operation”). Note the crossover cabling, e.g. CA+ with CB+. You can use ready-made cable from Pilz to connect two PNOZ ml1p. The plug-in connection terminals are either designed as cage clamp terminals or screw terminals (see order references). Cable shield: – Please note: Always connect the shield to both connection modules (Shield terminal). – The shield of the connection cable may only be connected to the Shield terminals on both PNOZ ml1p. Do not connect the shield to the equipotential bonding bar, for example. 2.3-118 Pilz GmbH & Co. KG, Sichere Automation, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany Telephone: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: pilz.gmbh@pilz.de NSG-D-2-403-2008-08
Products Expansion modules PNOZ ml1p Preparing for operation Supply voltage Supply voltage AC DC 24V 24V 0V 0V + 24 V DC 0 V Connection of two PNOZmulti base units via PNOZ ml1p Connection example 1 Series connection of 3 base units Reaction time t SUM between base unit Base 1 and Base 2: Input delay t ON at I3 and I6 + data transmission time 1 * t BUS through connection module + switch-off delay t COND of semiconductor output PNOZ ml1p CA+ CA- CB+ CB- Shield CA+ PNOZ ml1p CA- CB+ CB- Shield at O0 t SUM = t ON + (n * t BUS ) + t COND t SUM = 4 ms + (1 * 35 ms ) + 30 ms = 69 ms Reaction time t SUM between base unit Base 1 and Base 3: Input delay t ON at I3 and I6 + data transmission time 2 * t BUS through connection modules + switch-off delay t COND of semiconductor output at O1 t SUM = t ON + (n * t BUS ) + t COND t SUM = 4 ms + (2 * 35 ms ) + 30 ms = 104 ms 2.3 Base 1 Base 2 K2 Base 3 K3 CHIP-Card CHIP-Card CHIP-Card Shield I3 I6 Shield Shield O0 Shield O1 S1 Pilz GmbH & Co. KG, Sichere Automation, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany Telephone: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: pilz.gmbh@pilz.de NSG-D-2-403-2008-08 2.3-119
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PNOZmulti Modular Safety System Con
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Contents Contents 1.0 2007-11 Basic
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Basics Contents Page System descrip
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Basics System description Hardware
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Basics System description Maximum s
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Basics System description Diagnosti
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Basics System description Safety 1.
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Basics Configuration and Wiring Con
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Products Base units Contents Page B
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Products Base units PNOZ m0p Block
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Products Base units PNOZ m0p Prepar
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Products Base units PNOZ m0p Termin
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Products Base units PNOZ m0p Inputs
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Products Base units PNOZ m1p 2.2 NS
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Products Expansion modules Contents
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Products Expansion modules PNOZ ma1
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Applications Motor ON/OFF, Category
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Accessories Contents Page Accessori
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Accessories Cable, adapter Name Ord
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Accessories Connectors, terminals 4
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Order reference Contents Page Order
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Order reference Products Alphabetic
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Standards and directives Safety-rel
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Expansion modules - Automatech

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