NATIONAL CONTROLS 240T6 User Manual

5-4

1

2

3

4

5

6

7

8

1.770
(45.0)

2.400

(61.0)

120/240VAC

CONTACTS:
10AMP,1/3HP,345VA,

1 8

2

3

7

6

4

5

C B

AFFF

PIN CONFIGURATION

WEST CHICAGO, IL. 60185

MODEL: PLC-240T6-44T
INPUT VOLTAGE: 160-240 VAC

R R

3 , 60 HZ

3 PHASE VOLTAGE MONITOR

N
C

ATIONAL CONTROL

S

ORPORATION

F

.522

2.935

3.650 MAX

(74.5)

(93.0)

(13.26)

FaultNormal

Fault
Delay

Yellow

VOLTAGE

LO

Green

LINE

HI

Red

TRICOLOR LED

VOLTAGE MONITORS

3-Phase Voltage Monitor

Model 240T6

FEATURES

100% functionally tested

●

Low cost

●

Tri-color status LED

●

3 second fault delay timer

●

Line voltage setpoint adjustment range:

●

160 VAC to 240 VAC
50/60 Hz operation

●

SPDT 10 A relay output

●

Convenient plug in package

●

●

File #E59090

SPECIFICATIONS

SETPOINT

Adjustment: Single turn potentiometer for adjust-

ing nominal voltage
Range:

160-240 VAC 60 Hz LO to HI
180-240 VAC 50 Hz LO to HI

Accuracy:

Min. Setting (Max. CCW): Must operate (green
light) at 160 VAC, 60 Hz (180 VAC, 50 Hz) line to
line
Max. Setting (Max. CW): Must drop out (red light)
at 240 VAC 50/60 Hz line to line

Hysteresis: 2% typical

Operating Logic: This control continuously

monitors 3-phase power lines for abnormal
conditions. When properly adjusted, the
control will detect:

●

Phase loss on a loaded motor, regard

●

●

●

less of regenerated voltage
Low voltage on all phases
Very low voltage or loss of any single

phase
Phase reversal

If none of the above conditions are present,
the control will energize the internal relay
and the indicator light will be green. When
any of the above faults are detected, the
indicator light will turn yellow for approxi
mately 3 seconds warning that the relay is
about to de-energize. After the delay time
the relay will de-energize and the indicator
light will turn red. When the fault is correct
ed, the monitor will automatically reset by
energizing the relay and the indicator lamp
will be green. Should the fault be corrected
during the delay time, the monitor will not
de-activate the relay and the indicator will
again be green.

-

Fault Delay Time: 2 to 4 sec.

INPUT

3 Phase Operating Voltage: Three wire connec-

tion, no neutral required
160-240 VAC, 277 VAC max. line to line 60 Hz

-

180-240 VAC, 277 VAC max. line to line 50 Hz
Power Consumption: 3 W max. at 277 VAC line

to line exclusive of load

Frequency: 50/60 Hz

OUTPUT

Contact Type: Relay SPDT (1 form C)
Rating: 10 A max. resistive, 1/3 hp, 345 VA,

120/240 VAC
Life:

Mechanical: 10,000,000 operations
Full Load: 500,000 operations

Display: 1 tricolor LED

Green indicates status OK
Yellow indicates fault condition imminent
Red indicates fault condition

-

PROTECTION

Transient Voltage: protected by three 30 joule

metal oxide varistors
Dielectric Breakdown: 1500 V RMS minimum at

60 Hz between input and outputs and between
outputs

MECHANICAL

Termination: 8-pin plug

Adjustment: Apply 3-phase power with-

in operating range to the monitor (phase
sequence must be observed). Turn adjust
ment to maximum clockwise position.
Indicator lamp will be illuminated red after
the delay time. Slowly turn counterclock

-

Mounting: Socket mount, part number
MSO-0008P-012

-

ENVIRONMENTAL

Storage Temperature: -23°C to 70°C
Operating Temperature: -23°C to 55°C

wise until indicator changes to green (relay
will activate). If voltage is nominal, setting
should be correct.

Note: If phase sequence is incorrect, the monitor will not activate.
Reverse any two input leads and readjust as described above.

AMETEK National Controls Corp. • 1725 Western Drive • West Chicago, Illinois 60185 • Tel: [phone] • 630-231-5900 • FAX: [phone] • www.nationalcontrols.com

ORDERING INFORMATION

VOLTAGE RANGE PART NUMBER

160 to 240 VAC PLC-240T6-44T

ACCESSORY PART NUMBER

8-pin circular socket, DIN rail
mountable

MSO-0008P-012