Flowserve KW941 Bedienungsanleitung PDF herunterladen (Seite 6)

KW941 Pump Power Monitor USER INSTRUCTIONS ENGLISH 71569285 02-12

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3 DESCRIPTION

3.1 Configurations

The KW941 Pump Power Monitor provides a power

measurement, display and trip-point system to detect

and protect against both UNDERLOAD and

OVERLOAD conditions. The KW941 monitors

MOTOR POWER by sensing both VOLTAGE and

CURRENT. By factoring in motor efficiency, the

KW941 can be scaled to display PUMP POWER. The

adjustable trip-points can be set using power

information provided by the Flowserve Pros+

software for Flowserve pumps.

The KW941 consists of a current sensor and a

Display/Control module. The sensor, through which

one motor power lead passes, normally is located

inside the motor starter panel and provides a sample

of motor current to the Display/Control module. A

voltage sample is provided by a control voltage

transformer (not supplied) located between two of the

three motor power phases. The Display/ Control

module (located outside the starter panel) processes

the current and voltage sample information, contains

the LED display, alarm relays, and provides operator

interface.

Three models of the KW941 Power Monitor are

available based upon the supply voltage at the

customer’s site. The part numbers are listed below:

AY56930B = 110-120v, 60Hz

AY56930C = 220-240v, 50Hz

AY56930D = 220-240v, 60Hz

3.2 Nomenclature

3.2.1 Product Identification Label

3.2.2 Abbreviations

TS = terminal strip

TS1 = terminal strip screw position #1

Jp = jumper

NO = normally open

NC = normally closed

FS = full scale (power)

CR = control relay

MOL = motor overload

3.3 Design of major parts

3.3.1 Enclosure

• Material: polycarbonate, with see-through cover.

• Protection rating: NEMA 4X / IP66. Use only

certified liquid-tight access hole fittings/conduit

hubs to maintain enclosure protection rating.

• Overall dimensions: 182 mm W x 180 mm L x 90

mm H (7.17"W x 7.09"L x 3.54"H).

• Mounting hole spacing: 167 mm W x 173 mm H

(6.57"W x 6.81"H).

• Mounting screws: 4 mm (#8), quantity of four.

• Enclosure can be drilled, sawed or punched for

wiring access holes.

Do not damage the internal

components of the KW941 unit while making access

holes.

3.3.2 Power Requirements

• 110 Vac Model (110/115/120 nominal Vac),

60 HZ @ 0.100 amps

• 220 Vac Models (220/230/240 nominal Vac),

50/60 HZ @ 0.05 amps

• Fuse: (Internal to TS1 #2 VAC connection, not

user accessible.)

• For 110 Vac Models: 200 mA, 125 Vac, Slo

Blo, 5 x 20 mm

• For 220 Vac Models: 100 mA, 250 Vac, Slo

Blo, 5 x 20 mm

Power to the KW941 is supplied by a

(customer-supplied) control voltage transformer

connected between two of the three motor power

supply phases. Power may be supplied by an

existing appropriately connected transformer with

adequate capacity. Consult area codes/regulations

for transformer fusing and grounding requirements.

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