E-T-A ControlPlex CPC20, User Manual

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9.2 Channel
The parameters of the channels are described in the following chapters.
9.2.1 »Parameter channel« device parameters for a channel
The device parameters for one channel consist of 8 bytes.
They will be read and written with COM = 1, channel = 1..32 and index 1.
All parameters with possible conditions are described in the following table.
byte type range description
Rated current 0 byte 161…170 Holds the current rating of the channel.
With adjustable devices, you can set a new current rating here and transmit
with a write command.
161 = 1 A current rating (default value)
162 = 2 A current rating
163 = 3 A current rating
164 = 4 A current rating
165 = 5 A current rating
166 = 6 A current rating
167 = 7 A current rating
168 = 8 A current rating
169 = 9 A current rating
170 = 10 A current rating
Switch-on
behaviour 1 byte 161…163 Defines behaviour when connecting the supply voltage
161 = condition before power off (default value)
162 = off
163 = on
Disconnection
after overload 2 byte 105…135 Here it is determined at what percentage of rated current of the channgel
overload shall be signalled.
The default value is 120 %.
Trip time at
overload 3 byte 0…255 Here it is determined after which period of time in the overload range the
load output shall be disconnected.
The range is from 50 ms up to 10,000 ms. It is calculated with the factor 50.
Example for 3000 ms:
Trip time at overload (60) * 50 = 3000 3000 ms
The default value is 3000 ms.
Trip time under
short-circuit
conditions 4 byte 0…255 Here it is determined after which period of time in the overload range the load
output shall be disconnected.
The range is from 50 ms up to 1,000 ms. It is calculated with the factor 10.
Example for 100 ms:
Trip time at overload (10) * 10 = 100 3000 ms
The default value is 400 ms
ON delay 5 byte 0…255 Here it is determined after which period of time in the overload range the load
output shall be disconnected.
The range is from 50 ms up to 2,500 ms. It is calculated with the factor 10.
Example for 50 ms:
Trip time at overload (5) * 10 = 50 3000 ms
The default value is 100 ms
limit value
load current 6 byte 50…100 Determines at which percentage of the current rating of a channel the
message »limit value
exceeded« (bit in status of cyclical data) is signalled.
The range is from 80 % to 100 %. The default value is 80 %.
Hysteresis for
the limit value
load current. 7 byte 0…255 This parameter determines the hysteresis of the limit value current.
The range is from 5 % to 20 %.
The default value is 5 %.
fig. 28: Device parameters channel