TR1200
12320-0752-04
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Caution! Temperature sensor terminals
The pin connections of Sensors 1…6 (below) are not compatible with Sensors 7…12 (above). If a 3-wire-
technique sensor connected below is to be connected above, both external connections must be
swapped.
Temperature sensors must be connected to the plug-in terminals T11, T12, T13 etc. To ensure proper
operation this plug-in terminals have gold-plated contacts. Do not use these plugs for other terminals.
Caution!
The sensor inputs and the RS485 interface are applied to the same electrical potential but are
galvanically isolated (2kV) for the auxiliary voltage. Take this into consideration during configuration.
RS485 connection:
Use RS485 Interface only with shielded wires.
Large cable lengths may shift the potential ground and the transmission can be disturbed.
Corrective measures can be galvanic separation or an additional ground wire.
Max. allowed cable length is 1000m.
Observe the maximum temperature permissible when installing in switching cabinet. Make sure
sufficient space to other equipment or heat sources. If the cooling becomes more difficult e.g.
through close proximity of apparatus with elevated surface temperature or hindrance of the
cooling air, the tolerable environmental temperature is diminishing.
Before switching on make sure that the operational voltage Us of the
type- plate and the mains voltage are the same.
A circuit-breaker or switch must be situated within easy reach of the
unit and fused. Installation excess current protection should be
≤ 10 A.
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