PNOZ s7 Safety relays Operating Manual-21399-EN-09
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PNOZ s7 PNOZ s7 safety relay The unit meets the requirements of EN 60947-5-1, EN 60204-1 and VDE 0113-1. The contact expansion module is used to increase the number of instantaneous safety contacts available on a base unit. Base units are all safety relays with feedback loop monitoring. The category that can be achieved in accordance with EN ISO 13849-1 depends on the category of the base unit. The contact expansion module may not exceed this.
PNOZ s7 Block diagram/terminal configuration Centre: Front view with cover, right: Front view without cover *Safe separation in accordance with EN 60947-1, 6 kV Function description with PNOZsigma base unit: } Dual-channel operation via PNOZsigma connector without PNOZsigma base unit: } Single-channel operation: one input circuit affects the output relays Installation Install contact expansion module without base
PNOZ s7 Wiring Please note: } Information given in the "Technical details" must be followed. } Outputs 13-14, 23-24, 33-34, 43-44 are safety contacts; outputs 51 -52 are auxiliary contacts (e.g. for display). } Auxiliary contact 51-52 should not be used for safety circuits! } To prevent contact welding, a fuse should be connected before the output contacts (see technical details). } Calculation of the max. cable length lmax in the input circuit: Rlmax = max.
PNOZ s7 } Feedback loop Feedback loop Base unit: Safety relay PNOZ X The inputs that evaluate the feedback loop will depend on the base unit and application } Base unit: Safety relay PNOZelog 24 V DC 51 feedback loop 52 PNOZsigma expansion module Connection to PNOZsigma base unit Base unit: Safety relay PNOZsigma The feedback loop is connected and evaluated via the connector Information If a base unit and a contact expansion module from the PNOZsigma
PNOZ s7 Faults - malfunctions } Contact malfunctions: If the contacts have welded, reactivation will not be possible after the input circuit has opened. Service life graph The service life graphs indicate the number of cycles from which failures due to wear must be expected. The wear is mainly caused by the electrical load; the mechanical load is negligible.
PNOZ s7 Technical details General Approvals Electrical data Supply voltage Voltage Type Voltage tolerance Output of external power supply (DC) Residual ripple DC Continuous duty Max. overall cable resistance Rlmax Single-channel at UB DC Voltage at Input circuit DC Current at Input circuit DC Number of output contacts Instantaneous safety contacts (N/O) Auxiliary contacts (N/C) Inputs Number Relay outputs Max.
PNOZ s7 Relay outputs 750107 Safety contacts, DC1 24 V at Max. current 6,0 A Min. current 0,01 A Max. power 150 W Utilisation category In accordance with the EN 60947-5-1 standard Auxiliary contacts, 230 V AC15 at Max. current 2,0 A Auxiliary contacts, 24 V DC13 (6 cycles/min) at Max. current 2,0 A Safety contacts, AC15 230 V at Max. current 5,0 A Safety contacts, DC13 24 V (6 cycles/min) at Max.
PNOZ s7 Times Switch-on delay With automatic reset after power on typ. With automatic reset after power on max. Delay-on de-energisation With E-STOP typ. With E-STOP max. With power failure typ. With power failure max. Environmental data Climatic suitability Ambient temperature Temperature range Storage temperature Temperature range EMC Vibration In accordance with the standard Frequency Max.
PNOZ s7 Mechanical data 750107 Cross section of external conductors with screw terminals 1 core flexible 0,25 - 2,50 mm², 24 - 12 AWG 2 core with the same 0,25 - 1,00 mm², 24 - 16 cross section, flexible AWG with crimp connectors, no plastic sleeve 0,20 - 1,50 mm², 24 - 16 2 core with the same cross section, flexible AWG without crimp connectors or with TWIN crimp connectors Torque setting with screw 0,50 Nm terminals Connection type Screw terminal Mounting type plug in Cross section of external – conducto
PNOZ s7 Information A safety function's SIL/PL values are not identical to the SIL/PL values of the units that are used and may be different. We recommend that you use the PAScal software tool to calculate the safety function's SIL/PL values. ATTENTION! It is essential to consider the relay's service life graphs. The relay outputs' safety-related characteristic data is only valid if the values in the service life graphs are met.
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