bolid Signal-10, User Manual

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Signal-10 Operation Principles
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The Monitor For parameter for outputs SIR and LAM defines the kinds of troubles of external device
circuits connected to these outputs which will be monitored for during Signal-10 operating. The failures
such as open circuit failures, short circuit failures, or both open and short failures will be monitored
without regard to is the relay output switched on or off. Setting this parameter to the value Without Mon-
itoring disables monitoring for troubles of the SIR or LAM output circuit. Table 4 shows how the Signal-
10 considered the values of load circuit resistances to match the various circuit conditions.
The Relay ON/OFF Events parameter can be set on individually for each relay output. If the parameter
is set on then output condition altering is transmitted to a network controller.
Table 4. Output Circuit Conditions Depending on Effective Loading Resistance
Norm Open Circuit Short Circuit
Output
is on
Output is
off
Output
is on
Output is off
Output
is on
Output is off
26
Ω
to 10 k
Ω
More than 12 k
Ω
(upon supply voltage 12 V)
More than 10 k
Ω
Less than 24
Ω
More than 25 k
Ω
(upon supply voltage 24V)
Local Output Control
In order to control automatically a device output depending on alarm loop condition (that is, local con-
trol) do the following:
−
While programming the alarm loop (loops), assign this loop (these loops) to the required re-
lay by means of the relevant Relay … Control parameter and define if necessary the re-
quired Relay Activation Delay value (see the Alarm Loop Configuration Parameters Sec-
tion of this Manual)
−
While programming the device outputs, assign this relay output to a suitable Executive Pro-
grams and give if necessary a suitable Relay Activation Time
An Executive Program defines the method the relay output will be controlled depending on current
status of the alarm loops related with the relay output and the initial condition of the relay after power-
ing-on the Signal-10. Table 5 describes all available executive programs for the Signal-10 device.
A Relay Activation Time gives the time interval the relay will be activated for (switched on or off) if the
assigned executive program implies the limited activation time. The maximum time interval the relay
can be activated for is 8192s, that is 65535 intervals each of 0.125s.
For all the executive programs except #9, #10, #13, #14, #15, #16 (see Table 5), switching the relay
output on (off) upon the alarm loop status changing can be delayed for the time given by the relevant
Relay Activation Delay value for each alarm loop. Therefore, a relay output can be activated at differ-
ent times depending on the particular alarm loop which status changing switches the relay and Relay
Activation Delay value specified for this loop.