MiniFlex Input / Output DINrail Unit
MiniFlex IO DINrail unit contains 4 Inputs and 4 Outputs.
Input is a pair of contacts connected to current detector; if the current is present in the electric circuit the Input switches its state to "Closed". Input changes its state into "Open" if no current detected in the electric circuit.
Output is a pair of contacts (normally-open and normally-closed) and common wire connected to relay. Relay may stay either on "Active" or in "Inactive" state. Active state means that the current passes through relay coil and common contact is connected to the normally-open contact. Inactive state means that no current passes through relay coil and common contact is connected to normally-closed one.
Two MiniFlex Line Cards or DINrail modules create communication channel that transfers Input status to corresponding Output relay over DSL, Ethernet or E1 link.