User Guide

Offset Temp

This feature is used to maintain a desired temperature in an area not being

directly sensed by the MP2 system. The average difference between the

MP2 sensed discharged temperature and the desired space temperature

must be known. This is the Offset. The Offset will set the MP2 sensed

discharged air needed to produce the desired space temperature.

Decrease (-) the Offset to maintain and control space temperature lower

than MP2 discharged temperature. Increase (+) the Offset to maintain

and control space temperature higher than MP2 discharged temperature.

The space temperature will be displayed as the Process Set Point.

The feature has a range of -10°F (-5.6°C) to +10°F (5.6°C) and is avail-

able for each Process.

Ramping

This feature is used to step the input rate when changing from one Process

Set Point to another. It is available for each Process. The Ramping Rate

determines the amount of temperature change per hour in one-minute

steps. It has a range of 60 Deg/hr to 900 Deg/hr. The change can be

positive or negative.

This feature can be used with Max Ramp VDC and Soft Start to smooth the

stepping. (Soft Start only works when Process Temperature increases.)

“Ramp” is displayed to indicate the Ramping feature is active.

Example

1 Program Offset to -5°F.

2 Program Process Set Point (desired space temperature) to 75°F.

3 Therefore discharge air temperature = 80°F.

(Required MP2 discharge air temperature to maintain desired space temperature.)

4 The MP2 discharged air temp. is 80°F. The displayed Process Set Point is 75°F.

Features

80°F -5°F 75°F

Example

Process 1 = 75°F

Process 2 = 125°F

Process 2 Ramp Rate = 600 Deg/hr or 10 Deg/min

1 The control switches from Process 1 to Process 2.

2 The controller will immediately raise the temperature 10° and will hold it at the

new set point 85°F (75°F + 10°F) until 1 minute has passed.

3 It will continue to raise it 10° each subsequent minute until it meets Process 2.

4 It will take 5 steps (10°F each) and 4 minutes to go from 75°F to 125°F.