TAVRIDA ELECTRIC VCB Series, Руководство пользователя, Страница: 86 / 142

86
CM relay contacts operation
Relay contacts of CM_16_1 change their state as described below.
Table 14 -
CM relay “Ready” contacts operation
CM state
Relay
“Ready“ contacts state
NO (terminals 7-8 by default) NC (terminals 6-7 by default)
CM is ready for close or open operation Open Closed
CM is not ready for close or open operation Closed Open
Table 15 -
CM relay “ISM main contact position” contacts operation
Relay “ISM main contact position“ contacts state
ISM state NO (terminals 4-5 by default) NC (terminals 3-4 by default)
ISM is closed Open Closed
ISM is open Closed Open
CM performs the checkup
of ISM main contacts position and updates the “’ISM main contacts position” relay
status in the following cases:

In case Close command was applied from the CM. In this case the update is performed not later than in
150 ms after ISM main contacts closing;

In case Trip command was applied from the CM. In this case the update is performed not later than in 70
ms after ISM main contacts opening;

Periodically every 10 s in case no Close or Open command was applied from the CM.
In case application project requires to define main contacts position faster than the timing mentioned above it
is recommended to use auxiliary switches installed at the ISM. Position indication of ISM provided by CM can
be incorrect, in case CM is not operable due to absence of auxiliary supply.
Table 16 -
CM relay “Malfunction or Loss of auxiliary supply“ contacts operation
CM state
Relay “Malfunction or Loss of auxiliary supply“ contacts state
NO NC
Power supply voltage is absent for more than 1.5 seconds
(1 blink of LED Malfunction)
Open Closed
Excessive trip or close time (2 blinks of LED Malfunction) Open Closed
Actuator coil isolated (3 blinks of LED Malfunction) Open Closed
Short circuit of Actuator coil (4 blinks of LED Malfunction) Open Closed
Manual Trip and Lock (5 blinks of LED Malfunction) Closed Open
Out of temperature range (6 blinks of LED Malfunction) Closed Open
ISM state is open without command from the CM (7 blinks
of LED Malfunction)
Open Closed
Internal fault of CM (continuous light of LED Malfunction) Open Closed