Studer Innotec SA
RCC-02/-03
User manual V4.4.0 67
14.12 AUXILIARY CONTACTS 1 AND 2 EXTENDED FUNCTIONS {1489}
14.12.1 Generator startup
The two contacts may be combined in order to automatically start up a generator equiped with an
electric starter. In this case the two contacts are dedicated to this function.
Auxiliary contact 1 serves as an operational contact and auxiliary contact 2 as a startup contact.
The startup condition of the generator must
be programmed with the configurations of
auxiliary contact 1. The startup is carried out
by first activating the operational contact
and then activating the startup contact. The
latter engages several times, if necessary, to
start up the motor. If a voltage appears at the
terminals of AC-In, the startup contact is
released.
A. Main contact hold/interrupt time
{1574}
B. Time before a starter pulse {1494}}
C. Starter pulse (with AUX2) {1492}
D. Number of starting attempts {1493}
14.12.2 Generator control {1491}
Activates the combination of the two auxiliary contacts for the generator start and the mana-
gement of the start impulses.
14.12.3 Number of starting attempts {1493}
The start contact is activated a limited number of times in order to protect the starter if the generator
has a fault. Once the maximum number of start has been reached, the operational contact is also
deactivated. For a new attempt to be made the condition that generated the start must disappear
and reappear.
14.12.4 Starter pulse (with AUX2) {1492}
With this configuration you can adjust the time at which the start contact is activated.
14.12.5 Time before a starter pulse {1494}
This configuration determines the duration between the start attempts. It also determines the duration
between the activation of the operational contact and the first attempt at restarting.
14.12.6 Main contact hold/interrupt time {1574}
Some generators must have the main contact completely stopped between the cranking attempts
(choke pulse). This parameter allows to set this duration.
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