Danfoss 11101118 Manuale di installazione

Sfoglia online o scarica il pdf Manuale di installazione per Controllore Danfoss 11101118. Danfoss 11101118 6. Intrinsically safe control

Series 90 Intrinsically Safe Control

Installation, Maintenance

This line of Intrinsically Safe Pressure Control Pilots receives a low current input signal from a variety of machine controllers and

converts the current signal into a proportional di erential pressure signal suitable to control larger hydraulic equipment in hazardous

locations. The Intrinsically Safe Controls can be added to a Series 90 pump as a standard option or purchased separately.

Danfoss o ers ﬁve di erent models of Intrinsically Safe Pressure Control Pilots to accommodate a variety of standard industrial

process controllers. Various combinations of hydraulic nozzle sizes and coil resistances yields a relationship between electrical current

(input) and hydraulic di erential pressure (output).

Refer to the

Unit Speciﬁcations

tables on pages three and four for proper selection.

Ensure that the four supplied O-rings are in place on the bottom of the unit. These pressure control pilots are fastened to the second

stage of the control with four M5 x 0.8 x 16 mm socket head screws. Torque to 5 Nm (44 in-lb).

A Mil-Spec Connector (MS3102C-14S-2P) provides the means for electronic signal input to the device. Proper selection of the mating

connector to ensure safe operation in a hazardous environment is required (Recommended MS3108E-14S-S, Danfoss Kit number

K08106). A suppression circuit is incorporated in the PCP torque motor cover but by itself does not insure intrinsic safety. An additional

safety barrier used to connect intrinsically safe circuits with non-intrinsically safe circuits must be connected in series between the

PCP and controller. The safety barrier and electrical controller must be isolated from the hazardous area either through use of a purge

enclosure or mounted in a safe area. The intrinsically safe device enclosure grounding terminal must be connected to a robust chassis

ground. The connection must be in accordance with applicable standards where required.

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