Motrona DS230 Series, Safety Manual, Page: 26 / 100

Ds230_03a_oi_e.doc / Jun-15 Page 26 / 100
5.10. Relay-Output
The safety-related relay-output consists of two independent relays with force guided contacts. The
normally open contacts of the two relays (NO) are internally connected in series. At the 2-pin screw
terminal [X1 | RELAY OUT] the series-relay-contact can be tapped for integration into a safety circuit.
The contacts are only closed during normal and disturbance-free operation. They will open to its
safety state in case of errors or when the programmed switching condition (see chapter
7.4.5 ) is
fulfilled. In a de-energized state of the unit, the contacts are also open.
The switching points and conditions of the relay-output are freely programmable by parameters (see
chapter
7.4.5 and 7.4.6 ). Further the “opener” is also integrated within all monitoring functions.
In case of an error, the contact changes to its open and safe condition.
pluggable 2-pin screw terminal [X1]
internal connection [X1]

In case of an open relay-contact, the operator is responsible to ensure
a safe state to all relevant parts and components of the equipment.

The target unit must be able to evaluate edges, in order to determine dynamical
conditions of the relay output too.

At frequencies close to the switching point, relay bouncing may occur through
the variance of the frequency measurement. To prevent this effect, a hysteresis
should be set (see parameter 053).

If short oversteps of the switching point should be detected, a lock output should
be set (see parameter 057)