MODEL: APTA

APTA SPECIFICATIONS

ES-2138 Rev.7 Page 1/4

http://www.m-system.co.jp/

Limit Alarms (potentiometer adj.) A-UNIT

PT ALARM

(Average sensing, RMS calibrated)

Functions & Features

• Providing SPDT relay outputs at preset AC voltage levels

from a VT

• Average sensing

• Dual (Hi/Lo) trip

• Energized or de-energized coil at a tripped condition

selectable

• Deadband (hysteresis) adjustable

• Enclosed relays

• Relays can be powered 110 V DC

• High-density mounting

Typical Applications

• Annunciator

• Various alarm applications

50

(1.97)

132

(5.20)

80

(3.15)

mm (inch)

MODEL: APTA-[1]1[2][3]-[4]

ORDERING INFORMATION

• Code number: APTA-[1]1[2][3]-[4]

Specify a code from below for each of [1] through [4].

(e.g. APTA-1111-B)

[1] INPUT

Voltage

1: 0 – 110 V AC

2: 0 – 220 V AC

5: 0 – 150 V AC

6: 0 - 300 V AC

[2] SETPOINT 1 OUTPUT

1: Hi (coil energized at alarm)

2: Hi (coil de-energized at alarm)

3: Lo (coil energized at alarm)

4: Lo (coil de-energized at alarm)

[3] SETPOINT 2 OUTPUT

1: Hi (coil energized at alarm)

2: Hi (coil de-energized at alarm)

3: Lo (coil energized at alarm)

4: Lo (coil de-energized at alarm)

[4] POWER INPUT

AC Power

B: 100 V AC

C: 110 V AC

D: 115 V AC

F: 120 V AC

G: 200 V AC

H: 220 V AC

J: 240 V AC

DC Power

S: 12 V DC

R: 24 V DC

V: 48 V DC

P: 110 V DC

GENERAL SPECIFICATIONS

Construction: Plug-in

Connection: M3.5 screw terminals

Housing material: Flame-resistant resin (black)

Isolation: Input to output 1 to output 2 to power

Input waveform: Sine wave

Zero adjustment: -5 to +5 % (front)

Span adjustment: 95 to 105 % (front)

Setpoint adjustments: 270°-turn screwdriver adjustments

(front); 0 – 100 % independently

Hysteresis (deadband) adjustments: 1 – 100 % (front)

Front LEDs: LED turns on at a tripped condition; red for

output 1, green for output 2

Power ON timer: Relays de-energized for approx. 2 seconds

after power is turned on.

INPUT SPECIFICATIONS

Frequency: 50 or 60 Hz

Input burden: 0.5 VA max.

Overload capacity: 200 % of rating for 1 minute, 120 %

continuous

Operational range: 0 – 100 % of rating