Remote device KFM 903A50
903A50
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data subjects to alterations
903A50_e1.doc / 1510817
1 Display for relay function
2 Descriptive text for relay function
3 Digital values and descriptive text displays
4 Unit of display
5 Key for setpoint and parameter mode
6 Setpoint adjustment
F903-tft110202
1
2
5
6
Vorlauf / Supply
Rücklauf / Return
B
Brenner -
Grundlast
RL-Min-Alarm
VL-Max-Alarm
Kaltstart-Begr.
Sollwert
General:
With remote devices 903A50 controller types 903 / 93 with option 99sre can be remotely operated, i.e. all
operations can take place at the controller as well as at the remote control device resp. all indications are
visible on both.
In the attempt of simultaneous operation the device which was operated first has priority. At this device the
operation can be continued normally, at the other device the operation is blocked. But at any time on the
displays of both devices identical contents are indicated. After the used menu level of the prior device has
been left, operation is possible at both devices.
Depending on type, keys can be integrated in the remote device or routed to the terminals for connecting
external keys.
The connection to the controller with option 99sre is realised by a patch cable. The remote device can be
connected in a maximum distance up to 100 m.
Types
Li.No.
Remote device standard version, power supply 100...250V AC
903A500
Remote device standard version, power supply 24V DC
903A508
Flow chart: (Examples, single remote device / two remote devices connected via a switch.)
controller 9..sre
remote device
patch cable
(CAT 5e)
°
°
285
282
Supply
Return
F903-tft110202
Vorlauf / Supply
Rücklauf / Return
B
Brenner -
Grundlast
RL-Min-Alarm
VL-M ax-Alarm
Kaltstart-Begr.
Sollw ert
Vorlauf / Supply
Rücklauf / Return
B
Brenner -
Grundlast
RL-Min-Alarm
VL-M ax-Alarm
Kaltstart-Begr.
Sollw ert
controller 9..sre
remote device
patch cable
(CAT 5e)
°
°
285
282
Supply
Return
F903-tft110202
Vorlauf / Supply
Rücklauf / Return
B
Brenner -
Grundlast
RL-Min-Alarm
VL-M ax-Alarm
Kaltstart-Begr.
Sollw ert
Vorlauf / Supply
Rücklauf / Return
B
Brenner -
Grundlast
RL-Min-Alarm
VL-M ax-Alarm
Kaltstart-Begr.
Sollw ert
Vorlauf / Supply
Rücklauf / Return
B
Brenner -
Grundlast
RL-Min-Alarm
VL-M ax-Alarm
Kaltstart-Begr.
Sollw ert
switch
Note: Interface connections must be laid out
with shielded and twisted cables of category 5
or better (CAT5e)!
