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Bedienungsanleitung Steuerung S4_2006_09_25-neu.doc Page 29 / 83
© wodtke GmbH Tübingen. All rights reserved. Subject to change without notice. Month of issue xx/2007 Art. No. 950 281
6.1 Output of On/Off signals or collective error messages (relay table)
As can be seen from the above table, relay outputs R1, R2 and R4 are switched depending on
the operating state or error status of the appliance. This feature can be used to forward
messages from the wodtke appliance to an external controller or a modem, permitting remote
sampling of functional values, for example. In this case operating states and collective errors
are defined as follows.
Note:
15-minute fan after-run “G OFF” counts as operating time.
Relays R1 and R2 are designed as make-contact (not break-contact) relays (i.e. closed
when operated).
Relay R4 is designed as a break-contact relay (potential-free, 2 A maximum load).
R1 = On/Off signa:
R1 = 0 V = stove off message “R1 OFF”
R1 = 230 V = in operation message “R1 ON”
R2 = collective error message
R2 = 0 V = error message “R2 OFF”
R2 = 230 V = no error message “R2 ON”
R4 = potential-free On/Off signal (monitored break-contact safety relay):
R4 = closed = stove off message “R4 OFF”
R4 = open = in operation message “R4 ON”
Matrix of operating
states Normal
operation Operating error “Off” via external
controller
without error
“Off” via external
controller
with error
“Off” via
operating panel
and therefore not
ready for
operation or
power failure
State of I/O key on
operating panel ON
=
ready for
operation
ON
=
ready for operation
ON
=
ready for operation
ON
=
ready for
operation
OFF
= not ready for
operation
State of external
controller HE at
“ON/OFF” input (if
connected)
ON
or bridged ON
or bridged
OFF
(message
“HE OFF”)
OFF
(message
“HE OFF”) Either ON or OFF
An error has occurred
or the appliance is not
ready for operation NO YES NO YES Either YES or NO,
since not ready for
operation = error
Voltage at outp
ut R1
230 V
230 V
0 V
0 V
0 V
Voltage at output R2
230 V
0 V
230 V
0 V
0 V
State
of R4 (break-contact
relay)
open
open
closed
closed
closed
Note:
I/O key on the operating panel overrides all other controls = “heater emergency switch”
for the pellet stove.
29


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