User manual

iii
Table of contents
Chapter 1: Introducing the SEC-HD .................................................................................. 5
Introducing the SEC-HD ............................................................................................................................ 5
Common applications ........................................................................................................................... 5
Features ................................................................................................................................................. 6
Becoming familiar with the SEC-HD .......................................................................................................... 7
Menu layout ........................................................................................................................................... 8
Chapter 2: Installing your SEC-HD .................................................................................... 9
What you need to know before installing your SEC-HD ........................................................................... 9
Understanding power surges and surge suppression .......................................................................... 9
Reducing electrical noise using filters ................................................................................................. 10
Electrical ratings .................................................................................................................................. 11
Using power contactors to increase the capacity of relays................................................................. 11
SEC-HD layout ..................................................................................................................................... 12
Mounting your SEC-HD ....................................................................................................................... 13
Connecting equipment to your SEC-HD ................................................................................................. 13
Connecting the power source ............................................................................................................. 13
Connecting temperature probes ......................................................................................................... 14
Connecting variable-stage cooling elements ...................................................................................... 15
Using three-phase power .................................................................................................................... 16
Connecting single-stage heating or cooling elements ........................................................................ 16
Connecting an alarm system ............................................................................................................... 17
Finishing the installation .......................................................................................................................... 18
Chapter 3: Configuring your SEC-HD ............................................................................. 20
What you need to know before configuring your SEC-HD ..................................................................... 20
Configuring the main control functions ................................................................................................... 21
Selecting the temperature units, parameter 17 ................................................................................... 21
Selecting the operating frequency, parameter 18 ............................................................................... 21
Configuring hysteresis, parameter 24 ................................................................................................. 22
Configuring the stages ............................................................................................................................ 23
Configuring variable stages, parameters 19 and 20 ........................................................................... 23
Configuring relay stages, parameters 21 to 23 ................................................................................... 24
Testing the configuration ......................................................................................................................... 25
Chapter 4: Programming your SEC-HD .......................................................................... 26
What you need to know before programming ........................................................................................ 26
Understanding how the SEC-HD operates.......................................................................................... 26
Programming the parameters ................................................................................................................. 29
Programming the group set point, parameter 1 .................................................................................. 29
Programming variable stages, parameters 2 to 9 ............................................................................... 30
Programming relay stages, parameters 10 to 14 ................................................................................ 31
Programming alarm settings, parameters 15 and 16 .......................................................................... 35
Chapter 5: Monitoring and maintaining your SEC-HD .................................................... 38
Monitoring your SEC-HD ......................................................................................................................... 38
Displaying the minimum and maximum temperatures ....................................................................... 38
Selecting the operating program ......................................................................................................... 39