User manual
Chapter 3: Configuring your TVS Phason
26
Configuring the stages
Your TVS has two types of stages: two variable stages and one (ON/OFF) stage.
Configuring variable stages, parameters 15 and 16
Variable stages 1 and 2 control elements that operate with gradually
changing voltage, such as variable speed fans.
There are three configuration options.
Off
(0ff) – the variable stage is always off.
Cooling 1
((L1) – the stage controls a variable speed fan using motor curve 1. Use motor
curve 1 for most fans.
Cooling 2
to
Cooling 4
((L2, and so on) – the stage controls a variable speed fan using selected
motor curve. Use one of motor curves 2 to 4 only if one of the following problems occur when
using manual override to test.
The fan changes speed only within a small portion of the 0 to 100% range
The fan runs at full speed regardless of the 0 to 100% range
For more information about motor curves, including a table cross-referencing
fan motors with recommended curves, read
Appendix G: Motor curves
on page
59.
Use the
Variable and relay stages configuration worksheet
on page 57 when
configuring variable stages.
For more information about how variable stages work, read
Programming
variable stages
on page 33.
Default: cooling 1
To configure variable stages
1. Press
Program
until (0Nf displays and then press
Select
.
The display shows 13, the first item in the Configuration menu.
2. Press
Up
until 15 displays for variable stage 1 (or 16 for variable
stage 2) and then press
Select
.
The display shows the current configuration.
(
0Nf
“
L1
Increased speed
Increased voltage
Temperature