User Guide

3RT1 contactors/ 3RH1 control relays
SIRIUS System Manual
GWA 4NEB 430 0999-02 DS 01
3-23
Actuator-Sensor-Interface: Technical Data
Table 3-10: Actuator-Sensor-Interface, technical data
3.2.2.4 Remaining life time indication RLT (RLT = remaining life time)
For the 3RT10 and 3RT14 air-break contactors there is an option with the
electronic coils with the attribute "remaining lifetime indication RLT". The
function of RLT is that it detects the wear of the main contacts and indicates
optically and electrically a pending contact change for the plant operator.
Function The main contacts of the contactor are wearing parts and should be
changed quickly once they reach the end of their service life. The erosion of
the contact material and therefore the electrical service life (=the number of
operations) depends on the load, utilization category, duty type, etc.. Rou-
tine inspections / visual checks by maintenance staff are needed to provide
information as to the condition of the main contacts. The "Remaining life-
time indicator" eliminates this task. The number of operations isn’t counted
– because that doesn’t provide any information on contact wear. The actual
progress of contact erosion on each one of the 3 main contacts is deter-
mined electronically. It is evaluated and then stored. When a determined
limit is reached, a warning signal is sent. Stored data is not lost if there is a
loss of the control voltage.
After changing the main contacts the remaining lifetime indication needs to
be reset by pressing the RESET button. This will restart the evaluation pro-
cess.
I/O-Configuration (Hex)
ID-Code (Hex)
7
F
Operational voltage
V
25.5 to 31.6 (in acc. with the AS-Interface-specification)
Current draw/AS-Interface
mA
max. 20
Contact rating SF 1/2
mA
3 to 6
Watchdog-Function
(disconnection of the outputs with AS-Interface-fault)
built in
Indicator reaction LED Status Status description
While in operation the LEDs
show the status, as shown
to the right
Station address 0
No AS-Interface-communication
AS-Interface-communication ok
Diagnosing the contactors using the application program
•Inputs •Outputs
Input signals Device status Output signals Device status
DI0 "ready" 0 Device not ready/Manual operation DO0 "running" 0 Contactor OFF
1 Device ready/Automatic operation 1 Contactor ON
DI1 "running" 0 Contactor OFF DO1 0
—
1 Contactor ON 1 —
DI2 "remaining life time" 0 Remaining lifetime RLT > 20% DO2 0 —
1
Remaining lifetime RLT < 20%
1 —
DI3 "free input" 0 No input signal at SF 1/2
DO3 0
—
1 Input signal at SF 1/2
1
—
ON ON Flashing Flashing
AS-Interface
green red
red
yellow