Connection KeTop T100
28 User's Manual, version: 3.1 / material no.: 57448
© KEBA 2006
Functional procedure:
z Only if both channels are activated „simultaneously“ (by pressing one of
the enabling switches) both output relays K2 and K3 will energize and
the output contacts 13-14, 23-24 and 33-34 will close.
z The output relays K2 and K3 will not energize if
z only one enabling channel is activated (in case of a defect),
z the tolerance value for the simultaneity period is exceeded,
z the feedback control loop S11-S12 is open.
z If one enabling channel is deactivated after being simultaneously acti-
vated (by releasing the enabling switch or in case of a defect), the out-
put relays K2 and K3 will return to their initial position again.
The forced-guided output contacts 13-14 and 23-24 will open. The out-
put relays will energize again only after both enabling channels have
been deactivated and simultaneously activated once again.
In this way the enabling switches avoid that one single error makes the
safety function inoperational. A single error will be recognized at the next
cycle at the latest.
Foreseeable Misuse of Enabling Switch
Foreseeable misuse means the not allowed fixing of the enabling switch in
the enabling position. The foreseeable misuse of the enabling switch must
be restricted. The following measures causing the stop of the machine in
the manual mode are recommended:
z Inquiry of the enabling switch when turning on the machine/plant and
inquiry of the enabling switch when changing the operating mode from
automatic to manual (The enabling switch must not be in the enabling
position.).
z The enabling switch must be released within a defined period and
pushed into the enabling position again. The length of the period must
be defined according to the activity.
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