The GT1000 range of GOT/HMIs have a driver that supports connection to the 500 and 700 series Mitsubishi Electric VSDs. This provides the ability to interact with the VSD data and display information such as alarm codes. When displaying alarm codes the challenge is how to interpret the codes. This document aims to give some suggested solutions to this dilemma.
The most obvious way to display alarm codes is to place a Numeric Display object on screen as shown below.
In the example the device A1 has been selected and the display format is set to Hexadecimal. The devices A0 to A7 are available and they represent the following:
A0 – Second alarm in the past
A1 – Most recent alarm
A2 – Fourth alarm in the past
A3 – Third alarm in the past
A4 – Sixth alarm in the past
A5 – Fifth alarm in the past
A6 – Eighth alarm in the past
A7 – Seventh alarm in the past
The display format Hexadeimal has been chosen because in the VSD manuals alarm codes are given in this format. See example below:
Data Definition Data Definition Data Definition
H00 No fault present
An alternative to displaying the actual alarm codes could be to use a comment group and display the comment with a comment object or an alarm display. Remember however that the comment number in a comment group within GT Designer will be in decimal and not hexadecimal.
Example: Alarm E.THT = 30 in hexadecimal = 48 in decimal.
For further information, please refer to the GOT manuals and the appropriate VSD.