Connecting devices
Wieland Electric GmbH | BA000966 | 07/2016 (Rev. C)
Two-hand control
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Table 22: Two-hand control connection
Electrical connection: Example from samosPLAN5+
Type IIIA,
without tes-
ting
Channel 1: Contact between 24 V and I1
Channel 2: Contact between 24 V and I2
Type IIIC,
without tes-
ting
NO (normally open contact) between 24 V
and I6 (I8)
NC (normally closed contact) between 24
V and I5 (I7)
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Type IIIA
With type IIIA, two equivalent inputs (make NC contacts for both two-hand buttons) are moni-
tored.
A valid input signal is only generated when the ON state (H level) is present at both inputs
within a time of 0.5 seconds (synchronous change, both two-hand buttons actuated) and both
were previously in the OFF state (L level).
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Type IIIC
With type IIIC, two pairs of equivalent inputs (NC (normally closed contact)/NO (normally open
contact) contact pairs for both two-hand buttons) are monitored.
A valid input signal is only generated when the ON state (H/L level) is present at both inputs
within a time of 0.5 seconds (synchronous change, both two-hand buttons actuated) and both
were previously in the OFF state (L/H level).
You can find additional information in the operating instructions for two-hand control.
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