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Series 90 Intrinsically Safe Control
Installation, Maintenance

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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 differential 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 offers five different 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 differential 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.

Содержание Series 90

Страница 1: ...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...

Страница 2: ...er design on the entire system as noted in the applicable standards is required for safe usage in hazardous environments The EDC is designed to be controlled from a DC current source or voltage source...

Страница 3: ...port C1 Positive voltage to pin B produces a pressure rise at output port C2 Positive voltage to pin A produces a pressure rise at output port C1 Positive voltage to pin B produces a pressure rise at...

Страница 4: ...bar 300 500 psid Maximum return pressure 13 8 bar 200 psid 13 8 bar 200 psid 13 8 bar 200 psid 13 8 bar 200 psid 13 8 bar 200 psid Maximum internal leakage at 500 psid supply 3 41 lpm 0 90 gpm 2 46 l...

Страница 5: ...M12ATEX0031X II 1 G Ex ia IIB T4 Ga IECEx FMG 15 0008X Ex ia IIB T4 Ga Install per control drawing Input 8 6 VDC 250mA MODEL NO XXXXXXXXXXX DANFOSS POWER SOLUTIONS US COMPANY 2800 E 13th St Ames IA 50...

Страница 6: ...6 Danfoss A S 202...