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Switching relays ¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢
You can make versatile use of the relays on
the TFE module either to connect a door
hands free unit or as individual switching
relays with potential-free contacts for
other functions. For example, you can use
them to connect an additional bell or
lighting.
The number of available switching relays
depends on the version of the TFE module.
A maximum of 8 switching relays can be
used in the telephone system.
Counting method of the relays
The relays on the TFE modules are
counted upwards according to the module
slots from left to right and on the modules
from bottom to top.
TFE Module 402
Instead of a door hands free unit conform-
ing to FTZ 123 D12, you can use the relays
T0 and TS for other tasks.
Slot: TFE module 402 left (right)
TFE 2 relay TS = relay R4 (R8)
relay T0 = relay R3 (R7)
TFE 1 relay TS = relay R2 (R6)
relay T0 = relay R1 (R5)
If you want to use 8 switching relays and 1
TFE, you must plug the TFE modules in the
following arrangement:
Slot from left to right -
TFE module 402 - relay 1 to 4,
TFE module 402 - relay 5 to 8,
TFE module 402 or 403 - TFE
TFE Module 403
Instead of the door hands free unit TFE 2 in
conformity with FTZ 123 D12, you can use
the relays TO and TS for other tasks.
Slots TFE module 403 left (right)
TFE 2 relay TS = relay R4 (R8)
relay T0 = relay R3 (R7)
Example -
TFE module 402 and TFE module 403:
Slot: TFE module 402 left
TFE 2 relay TS = relay R4
relay T0 = relay R3
TFE 1 relay TS = relay R2
relay T0 = relay R1
Slot: TFE module 403 right
TFE 2 relay TS = relay R8
relay T0 = relay R7
By programming, you define for each relay
whether it is to operate as a pulse relay (3
seconds on) or as an On / Off relay. You can
switch the relays from any telephone and
from an internal or an external source. You
can also assign internal phone numbers to
the relays to include them in a call distri-
bution sequence, e.g. when connecting an
additional bell.
The relay contacts are jumpered with a 100
kOhm, 10 nF spark quenching
combination.
Maximum contact load: 30 V DC / 1 A or
125 V AC /0.5 A, ohmic load.
