Linear actuators

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Linear actuators in process automation

Linear actuators Copac DLPThe DLP are standards-based pneumatic double-acting actuators according to DIN 3358. The standardised mounting interface to DIN 3358 enables them to be mounted directly onto process valves such as knife gate valves. The connection pattern according to VDI/VDE 3845 on the cover of the actuator enables opening/closing applications to be controlled on site using a directly flange-mounted solenoid valve. Alternatively, the DLP can be controlled using a valve terminal. Various piston rod attachments are available as accessories for mounting the piston rod on the process valve. An external mountable displacement encoder MLO-POT-…-LWG is available for control applications. This can be used for operation with an external positioner.
Linear actuators with displacement encoder DFPIThe DFPI are controllable standards-based pneumatic double-acting linear actuators in accordance with ISO 15552 or DIN 3358. Product versions with an integrated displacement encoder (DFPI-…-E-…) or fully integrated positioner (DFPI-…-C1V-…) are available. In the version DFPI-…-E-…, the potentiometric displacement encoder supplies an analogue voltage signal proportional to the piston position. This can be used for operation with an external positioner. With the DFPI-…-C1V-…, the integrated positioner provides the positioning control function. This actuator has a factory-set safety position which is assumed if the operating voltage or the analogue setpoint value fails. The position is preset by an analogue setpoint signal of 4 to 20 mA. The position feedback is via an analogue feedback signal of 4 to 20 mA. The feedback signal provides the user with higher reliability and easier diagnostics. The electrical and pneumatic connection of the DFPI is via a plug socket, which also provides protection. Thanks to the standardised mounting interfaces to ISO 15552 or DIN 3358, there is a wide range of accessories for nearly every installation situation.
Accessories for linear actuators DFPIDADG is an adapter kit for the easy mounting of an external positioner with an ISO 5210 interface on the DFPI-…-E-NB3P. The NHSB is a pre-assembled, protected electropneumatic connecting cable for the DFPI. The pneumatic tubing and the electrical connecting cables are accommodated together in a single protective conduit. This ensures high mechanical and IP protection. The connection to the actuator DFPI is via a plug socket, which also provides protection. The connecting cable NHSB is available in different lengths of up to 15 m. It allows the DFPI to be installed easily and quickly.