Tekmar 152 Two Stage Setpoint Control Manual de usuario descargar pdf (Pagina 3)

Electrical connections

Power and output connections — Caution, Maximum 24 Volts A.C. or D.C.

Connect: — the power supply to terminals

C — R

+(1 and 2)

— the heating/cooling device circuit 1 to terminals

Relay 1

(3 and 4)

— the heating/cooling device circuit 2 to terminals

Relay 2

(5 and 6)

Sensor connection(s) — Caution, voltage is never applied to these terminals

Connect: Sensor

071 to terminals

S1 Sen and Com

(7 and 8)

Sensor

071 to terminals

S2 Sen and Com

(7 and 9)

Optional

Test the sensor

(s)

This test must be performed

before

power is applied to the control and

before

a sensor is connected to the terminal strip. Test

the sensor(s) according to the instructions printed in the enclosed Data Brochure D 070.

Test the power supply

• Ensure that the wires from the power supply transformer are not touching each other, any other wires or ground.

Turn on the

power and, using an AC voltmeter, you should measure between 20 and 28 volts at the secondary side of the transformer.

• Turn off the power and complete the electrical connections to the terminal strip of the control.

The digital display on the Two Stage Setpoint Control 152 has the following uses:

• To display the actual temperature(s) during normal operating mode.

• To allow the user to view and program the various control settings.

• To display control operation. ("HEAT" display element comes on when either relay closes to operate a heat source and "COOL"

display element comes on when either relay closes to operate a cooling device.)

• To display sensor faults. (Display will show "Err" when a sensor is either disconnected, short circuited or out of temperature range.)

• To display program faults. (Display will show "Prgm Err" when the “Heat/Cool” single sensor mode is incorrectly programmed.)

The following diagram illustrates how to operate the keypad buttons in order to view settings and program the control.

Do not apply

power here

24V

power

supply

Heating/Cooling

device circuit #1

Heating/Cooling

device circuit #2

C–

R+

10A

Relay 1

Relay 2

Com

Sen

Sensor

#1 (071)

Sensor

#2 (071)

Power

Settings

The control automatically goes back to operating mode when the buttons are left alone for 20 seconds

Item

Push or to

change Differential

Push or to

change Delay

Push or to select between

Heating or Cooling operation

Item

Push or to

change Setpoint

Item

Push or to

change Setpoint

Item

Push or to

change Differential

Item

Push or to

change Delay

Item

Push or to select between

Heating or Cooling operation

Item

Push or to select between

Fahrenheit or Celsius scales

2 Sensors

Dip Switch Up

If two sensors are are in use.

PROGRAM MODE

Pushing the "Item" button,

"PRGM 2" appears, and the

Setpoint (2) pointer will

ﬂash.

PRGM

Setpoint

When the control is

powered-up, all display

elements turn on.

DISPLAY MODE

POWER ON

When in operating mode,

the actual sensor

temperature(s) are

displayed.

After approximately 5 seconds, the control

automatically goes into operating mode.

OPERATING MODE

Push and Release

the

"Item" button. The display

will toggle between sensor

1 and 2.

Delay

PRGM

COOL

PRGM

Differential

PRGM

F C

Push all three buttons

at the

same time.

"PRGM 1" will

appear and the Setpoint (1)

pointer will ﬂash. The control

will be in programming mode.

Pushing the "Item"

button changes the

ﬂashing pointer to

Differential (1)

Pushing the "Item" button

changes the ﬂashing pointer

to Delay (1)

Pushing the "Item" button

allows Heating or Cooling (1)

operation to be selected

Pushing the "Item" button

allows the Fahrenheit or

Celsius scale to be

selected

Pushing the "Item" button

changes the ﬂashing pointer

to Differential (2)

Pushing the "Item" button

changes the ﬂashing pointer

to Delay (2)

Pushing the "Item" button

allows Heating or Cooling

(2) operation to be selected

Push and Hold

the "Item"

button. The programmed

Setpoint 1 and then

Setpoint 2 will be displayed.

Push and Hold

the

button. The programmed

Differential 1 and then

Differential 2 will be

displayed.

Push and Hold

the

button. The programmed

Delay 1 and then Delay 2

will be displayed.

Setpoint

HEAT COOL

F C

PRGM

Differential

PRGM

Delay

PRGM

Delay

PRGM

HEAT COOL

Differential

PRGM

HEAT COOL

Setpoint

Differential

Delay

PRGM

Setpoint

HEAT

COOL

Max. 24

Volts

1 2 3 4

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Tekmar 152 Two Stage Setpoint Control Manual de usuario Pagina 3

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