Functions - WEG CPW17 Manual Del Usuario

General Information
NOTE!
Observe regulations of the country when transporting, installing and disposing of the device.
All relevant safety rules and standards must be observed.

2.2 FUNCTIONS

The CPW17 is powered (A1 / A2) with extra-low voltage (SELV / PELV). The internal logical system closes the safety
contacts when the monitored safety inputs is closed and start button (S3) is pressed.
When the monitored safety inputs is opened (S1 / S2), the output contacts (13-14 / 23-24), forced guided, are opened
and safely shutdown the machine. It is ensured that a single fault does not lead to the loss of the safety function
and that every fault is detected by self-monitoring in a cyclical manner, ensuring detection after re-energization.
A1
POWER
START
S3
SINGLE-CHANNEL SAFETY CIRCUIT
„
A single positively driven contact in the safety component is connected to the relay. This type of connection is
suitable for categories 1 or 2 according EN ISO 13849-1.
DUAL-CHANNEL SAFETY CIRCUIT
„
Two contacts of which at least one is a positively driven contact are connected to the relay. This type of connection
is suitable for categories 3 or 4 according EN ISO 13849-1.
RELAY START CONTROL
„
After the relay has switched off, the relay must be re-started, with manual or automatic start:
Manual start: The relay is started by actuating a button. Before the safety inputs must be re-established.
„
Automatic start: The relay switches on automatically as soon as the safety inputs changes back to the safe state.
„
ATTENTION!
The renewed starting of the machine can only occurs automatically if it is ensured that there can be
no dangerous state.
6 | CPW17
A2 S0 S1
+
-
LOGIC
Figure 2.1: Block diagram
S2 13
K1
K2
14
23
24