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AT200

This document provides information about an asymmetrical recycling timer that can be used to control systems with alternating on and off cycles of different durations. The timer allows independent adjustment of the time settings for the on and off cycles between 10-100% of preset time ranges from 0.2 to 240 seconds or minutes. It has one DPDT relay and can be used for applications like refrigeration defrost cycles, irrigation watering/moving cycles, and more.

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RICHARD
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117 views1 page

AT200

This document provides information about an asymmetrical recycling timer that can be used to control systems with alternating on and off cycles of different durations. The timer allows independent adjustment of the time settings for the on and off cycles between 10-100% of preset time ranges from 0.2 to 240 seconds or minutes. It has one DPDT relay and can be used for applications like refrigeration defrost cycles, irrigation watering/moving cycles, and more.

Uploaded by

RICHARD
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Asymmetrical Recycling

Timer (Twin Timer) AT 200


(ON or OFF Time first)

WIRING EXAMPLE Application Examples


~ • Refrigeration plants for freezing cycle & defrost cycle.
+
• Centre pivoting for watering cycle and moving cycle on
irrigation systems.
A1 15 25 Y1 Y2 Y3 • System purging on boiler control panels.
• Chemical dosing and mixing.
• Conveyor transfer control for manual packaging.
• Material handling control in cutting applications.
• Periodic lubrication control on equipment.
16 18 A2 26 28 Y4 • Periodic moisture cycle control on catering equipment.

SUPPLY RELAY
TYPE VOLTAGE AC/DC CONTACTS
ORDERING
A-LINE CODE AT200 / 250 A D

Technical Specification
Power Supply: Time Time Setting: Time Unit

AC: 24, 110, 250 (ie. 90-250), 400 (ie. 380-415) V ±15% Setting accuracy: 5% Scale 10 to 100% (Link
dependent)

DC: 48, 60, 110 VDC ±10% Repeatability: 0.5% 2 0.2 to 2 Sec or min
6 0.6 to 6 Sec or min
AC/DC: 24 (ie. 12 or 24) V 20 2 to 20 Sec or min
Relay: 60 6 to 60 Sec or min

Note: 400V units have a 45mm wide housing 1 x DPDT, 5A/250VAC per contact 120 12 to 120 Sec or min
240 24 to 240 Sec or min

Description of Controls
back A1 15 25
front Y1 Y2 Y3
L1: The red “Relay ON” LED illuminates when the relay is energised.
A-LINE AT200
Asymmetrical Recycling
Timer 20
L2: The green “Power ON” LED illuminates when power is supplied to the unit. The LED flashes
T1
6 60 when the unit is timing. Before the relay switches, the flash rate increases.
2
120 S1
Range
240
Sec (min) S1: The Time Range of the first time interval (T1) is set on S1. Time ranges are 2, 6, 20, 60, 120
L1
40% & 240. The range selected is timed in seconds with no link to Y1, or minutes with Y1 linked to
70%
10% P1 Y3.
Time Set 100%
L2 20
T2 P1: The Time Setting of the first time interval (T1) is adjusted on P1. The time setting can be
6 60
2 S2 adjusted from 10% to 100% of the selected time.
120
Range
240
40%
S2: The Time Range of the second time interval (T2) is set on S2. Time ranges are 2, 6, 20, 60,
10%
70% 120 & 240. The range selected is timed in seconds with no link to Y2, or minutes with Y2 linked
P2
Time Set 100% to Y3.

front
P2: The Time Setting of the second time interval (T2) is adjusted on P2. The time setting can be
26 28 Y4
back 16 18 A2
adjusted from 10% to 100% of the selected time.

Operational Diagrams

Function 1 : Asymmetrical Recycling, OFF cycle First Function 2 : Asymmetrical Recycling, ON cycle

Power Power
Supply Supply
T2 T2 T2 T2 T1 T1 T1 T1
Relay ON T1 T1 T1 T1 Relay ON T2 T2 T2 T2

T1 = Time setting for first cycle


T2 = Time setting for second cycle

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