ABB CP-A CM Instrucciones De Servicio Y De Montaje página 5

(GB) Mounting:
The module is plugged and fixed as shown in Fig. II onto the front side of the redundancy unit CP-A RU. Doing so,
the pre-cut front foil of the redundancy unit is penetrated by the latching hooks and the plug contacts. The module
must not be plugged in or removed when the power is on.
Function:
The control module CP-A CM indicates the presence of both input voltages of the CP-A RU via LEDs and energized
output relays.
The threshold values for the output relays are adjustable separately per channel from 14 to 28 V. If, by a fault (e.g.
failure of a power supply, blown fuse), the voltage in a channel drops below the adjusted threshold value, the
corresponding output relay de-energizes. The green LEDs "IN 1", "IN 2" glow, if the corresponding voltage exceeds
the adjusted threshold value. The green LED "OUT" glows, if the output voltage is higher than 3 V.
Terminal assignment:
Terminal Designation
SENSE OUT
Message
INPUT 1 (IN 1) OK
Message
INPUT 2 (IN 2) OK
Function
The terminals SENSE OUT + + - are situated on the + and - potential
on the output side and can be used for signalling.
Volt-free (dry/floating) change-over contact
11-14 closed and 11-12 open, if the voltage in channel 1 (IN 1) of the
CP-A RU exceeds the threshold value adjusted at "IN 1 <V".
11-12 closed and 11-14 open, if the voltage in channel 1 (IN 1) of the
CP-A RU drops below the threshold value adjusted at "IN 1 <V".
Volt-free (dry/floating) change-over contact
21-24 closed and 21-22 open, if the voltage in channel 2 (IN 2) of the
CP-A RU exceeds the threshold value adjusted at "IN 2 <V".
21-22 closed and 21-24 open, if the voltage in channel 2 (IN 2) of the
CP-A RU drops below the threshold value adjusted at "IN 2 <V".
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