Athena 2000, 3020 Instruction Manual

1

Instruction

Manual

ANALOG TEMPERATURE

CONTROLLERS

SERIES

2000 / 3020

2

Introduction

Precautions

Congratulations on your purchase of an Athena®Series 2000 or
Series 3020 analog temperature controller. It is a U.L. listed,
1/4-DIN controller for use in a variety of applications. Standard
features include time proportioning with auto-adjusting cycle
time, djustable bandwidth (for on-off to wide band proportion­ing), and offset (manual reset). Outputs include relay, triac, or
mAdc types.

If you have questions or require any assistance with your con­troller or with any temperature control problem, please contact
your Athena representative or call technical support at 1-800­782-6776. Outside the USA, please call 610-828-2490.

3

After unpacking, inspect the instrument for any physical dam­age that may have occurred in shipping. Save all packing mate­rials and report any damage to the carrier immediately.

©Copyright 2004, Athena Controls, Inc.

Table of
Contents

Output Configurations 3

Preliminary Instructions 3

Mounting 3

Power Wiring Circuits 4

Thermocouple Wiring Circuits 6

RTD Wiring Circuits 6

Thermocouple Placement 6

Operation 7

Front Panel Layout 8

Output Function Switches 8

Adjustments 9

Maintenance 11

Specifications 12

Ordering Codes 13

Troubleshooting 14

Warranty 16

Unit Repairs 17

4

Preliminary
Instructions

Output
Configurations

Type “B” Relay with 7 A at 120 V and 5 A at 240 V

contacts, on-off and time proportioning

Type “F” Signal current, 4-20 mAdc

Type “L” Relay with 7 A at 120 V and 5 A at 240 V

contacts, on-off, reset switch

Type “T” Solid state relay 1 A, 120/240 V resistive

load; 1 A, 120/240 V, 10 A inrush,
inductive load (not U.L. rated)

Type “S” Pulsed 20 Vdc, for driving solid state

relays

Unpacking

Carefully unpack the instrument, inspect for shipping dam­age. Report any damage to the carrier immediately.

Locating

Select a location for the controller where it will not be subject­ed to excessive shock, vibration, dirt, moisture or oil. The
ambient temperature of the area should be between 30° and
130° F. (Dust, oil, water resistant cover is available to protect
from harsh environments. Contact factory for details.)

Mounting

Mounting

Mount controller into 92 mm (3-5/8”) square cutout (1/4­DIN). See Figure 1 for cutout and case dimensions. The
plug-in controller does not have to be removed from its hous­ing for mounting.

Remove the two screws in the back of the case that hold the
mounting slides, and then remove the slides. Insert case
from front of panel and reinstall the two slides and two
screws. The length of the slides must be reduced if the con­troller is to be mounted in an extra thick panel. If the con­troller has been unplugged from its housing, the top of the
housing can be determined by the serial number tag.

Figure 1: Cutout and case dimensions

5

Power Wiring
Circuits

Consult serial tag on the unit and select power wiring dia­gram for the model specified. All wires are connected to the
terminals on the back of the case. Screw terminals are pro­vided. Make appropriate connections using proper size wire
for rated controller load power circuits. (On -B output model,
use AWG #14 wire; for -F, -S and -T outputs use #14, 16, or
18 wire.) The unit can be supplied with 120 V or 240 Vac,
50/60 Hz. Select proper terminal for the voltage used.

Typical Wiring Diagrams

-T & -B Outputs

B-Type - 840 W maximum. 120 Vac heater. (Non-inductive
loads only) For larger loads, replace heater connections with
contactor, as required. Maximum inductive load rating is 3 A
at 120 V and 1.5 A at 240 V. The N.C. contacts can be used
for cooling.

T-Type - solid state relay with SPST contacts. The -T units can
handle contactors or resistive loads up to 1 A with 10 A
inrush maximum. For -T units use a 1 A, 250 V fast blow fuse.

-L Output (Limit Controller)

Wiring can be similar to that shown for “B.” The controller’s
relay is de-energized until the reset button on the front panel
is momentarily pressed. The relay will energize if the sensor
temperature is below setpoint. The common and N.C. termi­nals can be used to indicate alarm condition remotely when
wired to lights, bell, etc.

CAUTION
Possible fire haz­ard. Because
these controls or
associated equip­ment may not
always fail safe,
an approved tem­perature and/or
pressure safety
control should be
used for safe
operation.

Figure 2a: Typical 240 Vac for -B & -T Output

6

Power Wiring
Circuits

Figure 2b: Typical 120 Vac for -B & -T Output

Typical Wiring Diagrams

Figure 3: Typical 120/240 Vac

for -F & -S Output

-F, -S Output - 120/240 Vac

The -F output is 20 mA at the low temperature end of the pro­portional band and 4 mA at the upper end of the proportional
band. Maximum load resistance is 1000 ohms. The -S output
is a time-proportioned 20 Vdc signal. These controllers can­not be used with a device that does not have an isolated
input. An ungrounded thermocouple must be used if there is
ac leakage or a ground in the input of the device connected
to the controller’s output.