ECB-A-2K-A1-160397 (Rend. sz. 160397)

Note

Keys are included / order safety switch CTP including actuator separately

Functional description

In combination with a control system, the Euchner Control Box allows dangerous machine movements to be performed as long as all valid unique, transponder-coded keys (CKS keys) are inserted. If at least one CKS key is removed during operation, the two safety contacts are switched off and a stop command is triggered. The safety contacts remain switched off when the CKS key is removed. The installation cannot be restarted.

Function as lockout bar

When the CKS keys are removed from an ECB device up to two persons can access the hazardous area for servicing. As long as the operator carries the CKS key with him, there is no hazard for the operator due to unexpected machine start-up or being locked into the machine unintentionally. The ECB therefore performs the function of a safe lockout bar. The system can fulfill its safety function only if the users always carry their CKS keys with them when accessing the machine.

Function as trapped key system

When the CKS key is removed, the operator can enter the hazardous area safely and can use the same CKS key to start local machine functions via another ECB device.

Control of guard locking

Version ECB-A-2K-A1-160397 of this device features the option of controlling the guard locking of a safety switch CTP-LBI-AP. Guard locking release is prevented on the connected safety switch as long as all CKS keys are inserted in the device. In this combination, guard locking fulfills only the requirements for process protection. The task of the ECB-A1 device is to ensure that guard locking can be released only if the following conditions are met simultaneously: - A PLC signal is present at input IMP. - At least one of the two CKS keys has been removed from the CKS key adapter. Guard locking of safety switch CTP-LBI-AP cannot be activated or moved to locked position as long as at least one of the CKS keys is removed. Safety outputs FO1A and FO1B of safety switch CTP-LBI-AP are switched off as long as guard locking is released. Safety switch CTP-LBI-AP additionally features a bistable guard locking function. It ensures that the guard locking remains in its most recent position in case of a power failure: either “locked” or “released.”

Safety characteristics according to EN ISO 13849-1

Monitoring of the CKS keys and the guard position (prevention of unexpected start-up of a machine when the key is removed and the door is open) Category 4 Performance Level (PL) e

Connector assignment

Plug connector (view of connection side)	Pin	Designation	Function
		X 1.1	IMP	Control input of guard locking solenoid, 24 V DC
	UB	Operating voltage, 24 V DC
	14	Safety output, channel 1
	25	Safety output, channel 2
	OI	Diagnostic output
	OD	Door monitoring output
	OL	Guard lock monitoring output
	0 V UB	Operating voltage, 0 V DC
	OMP	Control output for guard locking solenoid CTP, 24 V DC
	UB	Operating voltage, 24 V DC
	13	Connection for safety output CTP, channel 1
	23	Connection for safety output CTP, channel 2
	OI	Connection for diagnostic output CTP
	OD	Connection for door monitoring output CTP
	OL	Connection for guard lock monitoring output CTP
	0 V UB	Operating voltage, 0 V DC