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3RP10, 3RP15 solid-state time relays
SIRIUS System Manual
7-6
GWA 4NEB 430 0999-02b
Combination voltage
In the case of combination voltage types, only one voltage range can be
connected. Never apply the two control supply voltages simultaneously.
Parallel load at the start
contact
The start contact is under voltage and rectified. There is a connection in the
time relay to the A1 and A2 terminals. The control of loads parallel to the
start input is therefore not permissible at AC 50/60 Hz control supply volt-
age.
The following information facilitates configuration of SIMIREL 3RP time
relays:
Combination/wide-
range voltages
80% of the time relay types are combination and wide-range voltage types
because they are flexible in their uses:
– Combination voltage: two operating voltage ranges (e.g. 24 VAC/VDC and
200 to 240 VAC) at different terminals
– Wide-range voltage: one operating voltage range from 24 VAC/VDC to
240 VAC/VDC at the same terminals
Two-wire time relay
Two-wire time relays have the following advantages over conventional time
relays in connection with contactors:
– Reduced wiring
– Bounce-free control
– The electronic output increases service life because no mechanical wear
occurs.
– Greater switching frequency
Special functions
• Pulsing function: pulse and idle time can be set separately.
• Flashing: the pulse/break ratio is 1:1.
• The timing period starts with the "off-delay without auxiliary supply" func-
tion if the time relay is separated from the supply voltage.
• In the case of the 3RP15 time relay with 15 selectable time settings,
there is a
∞
switch position. This means an endless timing period. If this
setting is chosen for the on-delay function, the output relay never swit-
ches through after the supply voltage has been applied (off function). In
the case of the "making pulse contact" function, the output relay always
remains on (on function). This can be used for test purposes.
• In the case of the "additive on-delay with auxiliary supply" function, the
time is added for as long as the start contact is activated. If the start con-
tact is interrupted, the timing period stops and is then continued once the
start contact is closed again.
This function is not non-volatile and requires a continuous auxiliary power
supply.
• In the case of the "shaping pulse contact with auxiliary supply" function,
an activated start contact triggers a timing period that can be set. The
control signal for this can be shorter or longer than the desired runtime.
Cable ducts
If you use cable ducts for wiring, the position and dimensions of the termi-
nal blocks must be taken into consideration (see pages 7-27).
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