Danfoss MCV116C3101 Installation guide

Unit Specification

MCV116C3101

Pressure Control Pilot Valve (PCP)

3500 Annapolis Lane North, Minneapolis, MN 55447 Telephone: (763) 509-2084 Telefax: (763

) 559-0108

GENERAL DESCRIPTION

This Pressure Control Pilot (PCP) is an intrinsically safe, torque motor-actuated, double-nozzle flapper valve that produces a differential output pressure proportional to the applied electrical input signal. It is a single-stage, stand-alone, closed-loop pressure control valve which uses internal hydraulic pressure reactions to achieve its closed-loop control characteristics. The

PCP contains an arc suppression circuit for use in hazardous areas. The term "intrinsically safe" refers to a design technique based on limiting energy, electrical and thermal, to a level below that

required to ignite a specific hazardous atmospheric mixture. This device is Factory Mutual certified for use in Class I, II, or III, Division 1, Group C, D, F, and G hazardous locations as defined by the National Electrical Code, NFPA-70 when used with approved barriers.

DIMENSIONS

MS CONNECTOR

Intrinsically Safe

ISSUE: 1 DATE: July 1998

MANUAL OPERATOR

NULL ADJUST

ACCESS SCREW

78,7

(3.10)

56,1

(2.21)

ELECTRICAL

CONNECTION

Pin Orientation of 4-pin,

° MS Mating Connector.

90 Part No. MS3108E-14S-S (Sauer-Danfoss Kit No. K08106).

Active Pins

A, B

2009

DO NOT REMOVE

COVER SCREWS (4)

17,5 DIA (2)

(0.69)

12,7

50,8

(2.00)

MAX

6,3

(0.25)

(1.50)

5,5 (0.217) DIA (4)

34,9

(1.375)

38,1

(0.75)

2,5 (0.10) (2)

(0.50)

19,0

3,0 (0.12)

9,5 (0.38)

REPLACEMENT FILTER PART NUMBER K08573

38,1

(1.50)

70,1 (2.76)

76,2 (3.00)

95,2 (3.75)

OUTPUT PORT - C1 4,8 (0.19) DIA 12,8 (0.50) O.D. X 1,78 (0.07) O-RING

Dimensions of the MCV116C3101 in Millimeters (Inches).

CAUTION

The cover is filled with 45 cc of 4000 cs silicone oil. Ensure that minimal oil is lost when screw is removed.

INTRINSICALLY SAFE DEVICE ENCLOSURE GROUNDING TERMINAL

PRESSURE PORT THRU FILTER 5,6 (0.22) DIA 12,8 (0.50) O.D. X 1,78 (0.07) O-RING

RETURN PORT 4,8 (0.19) DIA 12,8 (0.50) O.D. X 1,78 (0.07) O-RING

OUTPUT PORT - C2 4,8 (0.19) DIA 12,8 (0.50) O.D. X 1,78 (0.07) O-RING

2023

ELECTRICAL CHARACTERISTICS

• Single coil, coil resistance 23 Ω

• Phasing: Positive voltage to pin A produces a pressure rise at output port C1 Positive voltage to pin B produces a pressure rise at output port C2

• Current/voltage range: up to 190 mA at 4.75 Vdc (linear range), maximum 275 mA at 7.5 Vdc

K20493 UNIT SPEC

• Pulse Width Modulation (PWM) The PCP is designed to be controlled from a dc current source or voltage source. If a PWM signal is used, do not use a pulse current of more than 120% of that required.

• Scale factor: 1.15 ± 0.1 psid / mA

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HYDRAULIC CHARACTERISTICS

• Maximum supply pressure: 1000 psid Recommended range: 300 - 500 psid

• Maximum return pressure: 200 psid

• Maximum internal leakage: 0.65 gpm

• Maximum linear psid output pressure: 220 psid at 300 psid supply

• Load flow: the output differential flow across a 100 psid load pressure drop at maximum current: > 30 cim

• Hydraulic Fluid: Petroleum based, other fluids may be used provided that thy are compatibile with viton and fluorosilicone seals. Fluid cleanliness is ISO 4406 code 18/15 or better

WIRING

A suppression circuit is incorporated in the PCP torque motor cover but by itself does not insure intrinsic safety. An additional suppression circuit (Zener barrier) must be connected in series with the valve coils. The Zener barrier and electrical controller must be isolated from the hazardous area either

• Hydraulic Null Adjustment: The PCP null adjustment is sometimes required when configured with the servovalve (KVF) or applied as a stand-alone. If the PCP null takes an offset of <15 psid (>15 psid, consult factory) across C1 and C2 ports it can usually be reestablished to the original factory setting. To adjust, remove the null access screw (see Dimensions) and with a 3/32 inch hex head Allen wrench locate the adjusting screw just inside the cover. Turn screw in very small increments until the servovalve neutral is established or C1 and C2 psid is as close to 0 as possible. When finished, replace access screw. If the PCP is configured with an Electrical Displacement Control (EDC) mounted to a pump, never adjust an EDC neutral using the PCP null adjustment. EDCs are adjusted at their second stage.

through use of a purge enclosure or mounted in a safe area. See Dimensions for PCP enclosure grounding. Proper connection and suggested barrier model numbers are shown in the connection diagram below .

BIDIRECTIONAL CONTROL, SELECT ONE OF THE FOLLOWING BARRIERS

UNIDIRECTIONAL CONTROL, SELECT ONE OF THE FOLLOWING BARRIERS

Stahl Barrier 9001/02-172-270-10 (12V)

• Groups A, B, C, D, F and G (maximum voltage ±17.2V) Stahl Barrier 9001/02-308-230-10 (26V)

• Groups D, E, F and G (maximum voltage ±31.8V)

MCV BARRIER

HAZARDOUS LOCATION

CLASS I, II, AND III

DIVISION 1

GROUPS C OR D, F AND G

Stahl Barrier 9001/01-158-270-10 (12V)

• Groups A, B, C, D, F and G (maximum voltage 15.8V) Stahl Barrier 9001/01-280-280-10 (26V)

• Groups D, E, F and G (maximum voltage 31.5V)

EARTH

GROUND

MCV BARRIER

HAZARDOUS LOCATION

CLASS I, II, AND III

DIVISION 1

GROUPS C OR D, F AND G

EARTH

GROUND

(±)1

NON-HAZARDOUS LOCATION

(+)1

NON-HAZARDOUS LOCATION

CONTROLLER

OUTPUT

CONTROLLER

OUTPUT

1737

NO CHANGES TO THIS DRAWING WITHOUT PRIOR WRITTEN AUTHORIZATION FROM FACTORY MUTUAL.

K20493 UNIT SPEC

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