KFM 903A50 Manual

_______________________________________________________________________
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

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

Remote device standard version, power supply 100...250V AC
Remote device standard version, power supply 24V DC
Flow chart: (Examples, single remote device
controller 9..sre
patch cable
Brenner +
285
Supply
°
Brenner -
Vorlauf / Supply
(CAT 5e)
Grundlast
282
Return °
RL-Min-Alarm
VL-M ax-Alarm
Rücklauf / Return
Kaltstart-Begr.
Sollw ert
F903-tft110202
Note: Interface connections must be laid out
with shielded and twisted cables of category 5
or better (CAT5e)!
data subjects to alterations
Remote device KFM 903A50
/
remote device
Brenner +
Brenner -
Vorlauf / Supply
Grundlast
RL-Min-Alarm
VL-M ax-Alarm
Rücklauf / Return
Kaltstart-Begr.
Sollw ert
1 2
Brenner +
Brenner -
Vorlauf / Supply
Grundlast
RL-Min-Alarm
VL-Max-Alarm
Rücklauf / Return
Kaltstart-Begr.
F903-tft110202
5
two remote devices connected via a switch.)
controller 9..sre switch
Brenner +
285
Supply
°
Brenner -
Vorlauf / Supply
Grundlast
282
Return °
RL-Min-Alarm
VL-M ax-Alarm
Rücklauf / Return
Kaltstart-Begr.
Sollw ert
F903-tft110202
patch cable
(CAT 5e)
903A50
-Page 1 of 2-
Sollwert
6
Li.No.
903A500
903A508
remote device
Brenner +
Brenner -
Vorlauf / Supply
Grundlast
RL-Min-Alarm
VL-M ax-Alarm
Rücklauf / Return
Kaltstart-Begr.
Sollw ert
Brenner +
Brenner -
Vorlauf / Supply
Grundlast
RL-Min-Alarm
VL-M ax-Alarm
Kaltstart-Begr. Rücklauf / Return
Sollw ert
903A50_e1.doc / 1510817