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Operation

8.2 Connection terminals and their meanings (undelayed)

3TK2826 safety relay

20 Manual, 08/2007, GWA NEB 926 1579-02 DS 02

8.2 Connection terminals and their meanings (undelayed)

Table 8-1 Connecting terminals 3TK2826-*BB40 - undelayed enabling circuits

Connecting terminal Meaning

A1 +24V DC

A2 Chassis ground

13, 14; 23, 24; 33, 34; 43, 44 Relay enabling circuits, normally-open

51, 52 Relay signaling circuit, normally-closed (enabling circuit status)

64 Solid-state signaling circuit (feedback circuit fault), switching to P potential

74 Solid-state signaling circuit (sensor status), switching to P potential

T1, T2 Test outputs with pulsed test signals

T3 Test output with static test signal

1 Cascading input/normal switching duty

Y12, Y22 Sensor inputs, channel 1, channel 2

Y33 Start button (start after upwards and downwards edge)

Y34 Feedback circuit (checked only for "

closed"

to enable operation without feedback)

Table 8-2 Connecting terminals 3TK2826-*CW30 - undelayed enabling circuits

Connecting terminal Meaning

A1 24...240V AC/DC

A2 Chassis ground/N

13, 14; 23, 24; 33, 34; 43, 44 Relay enabling circuits, normally-open

51, 52 Relay signaling circuit, normally-closed (enabling circuit status)

63, 64 Signaling circuit, normally-open (feedback circuit fault)