Technical data

Page 14/ 24 34-81 10/2013

6. RELAY OUTPUTS

6.1 OUTPUT SETUP AND SPECS

1. 3 relay outputs. SPST relay contacts going to spade terminals #4-9.

2. The outputs are rated at 3A, or 8A resistive load.

3. Each output (1-3) can be controlled via Modbus RTU Communication by setting on or off to the 1on, 2on, 3on

parameters.

4. Each output can be configured to operate as a control output, typically for temperature control. This is done when

1on, 2on, 3on respectively are set to rEG. This is the default setting.

a. 1on=rEG Output 1 is configured for Temperature Control (Same for 2on, 3on ).

b. 1on=oFF Output 1 is off.

c. 1on=on Output 1 is on any time the TempTrac is enabled (Alarms will not disable). On power loss, this contact

will be open, and when the TempTrac displays OFF, this will contact will be open. This is no longer a control

output, and is not subject to alarms.

5. Output 1, Spade terminals 4 & 5.

6. Output 2, Spade terminals 6 & 7.

7. Output 3, Spade terminals 8 & 9.

6.2 OUTPUT 1 CALL FOR HEAT (1on=rEG)

Kind of action: Heating

Reference probe: TP1

Terminals: SPADE 4 & 5

Related Parameters: St1, Hy1, LS1, US1, AC1, i3F, 1on

time

Out1

Probe1

Set1

Set1+ Hy1

NOTES

1. When probe 1 TP1 falls below St1, a call for heat output will occur.

2. Hy1 is the differential to prevent short cycling.

3. When Hy1 is negative, this will prevent the call for heat from starting until TP1 falls below St1 + Hy1. The call for

heat will continue until TP1 reaches or goes above St1. See chart above.

4. If Hy1 is positive, then the call for heat will start when TP1 falls below St1, and will stay active until TP1 rises

above St1 + Hy1. Not shown on chart.