Operating Hours; Operating Hours Counter - MDT AMI series Technical Manual

Technical Manual Switch Actuators AMI/AMS
4.7 Operating hours
The operating hours counter can count the activity of a channel. There is as well a reverse counter to
the next service as a forward counter, with the setting operating hours counter, available.
4.7.1 Operating hours counter
The following illustration shows the available settings for the operating hours counter:
Figure 33: Operating hours counter
The following chart shows the dynamic range for this parameter:
ETS‐text
Type of operating hours
counter
Count if
Send status of operating
hours every ... hours
Table 37: Operating hours counter
The operating hours counter can count the operating hours at which the channel is active. These can
be count as well when the channel is switched on as when a determined current value is exceeded.
Furthermore can be adjusted when the communication object "Response operating hours" shall send
a value. This function can be deactivated by the setting 0h. So the object is switched passive and
sends no value, but can be requested. Via the object "Reset operating hours" the operating hours are
set back to 0h.
The following chart shows the relevant communication objects for this parameter:
Number Name
8 Response operating hours
9 Reset operating hours
Table 38: Communication object operating hours counter
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Dynamic range
[default value]
Operating hours counter
 Relay ON
 Current >20mA
 Current >50mA
 Current >100mA
 Current >200mA
 Current >500mA
 Current >1A
 Current >2A
 Current >5A
0‐100
[0h]
Length
2 Byte
1 Bit
comment
Chosen operating mode:
Operating hours counter
Adjustment of the counting condition
Adjustment when a message shall be
sent
Usage
sends the number of counted operating
hours
sets the operating hours back to 0h