Selecting The Relay Functions - wtw EcoLine pH 170 Bedienungsanleitung

pH 170/ pH 170/
pH 296 pH 296
Relay 1 / Relay 2 Relay 1 / Relay 2
The display shows: The display shows:

Selecting the relay functions

Selecting the relay functions
A function can be assigned to each relay: A function can be assigned to each relay:
Function Function
9Ç 9Ç
(no function) (no function)
E E
(power supply) (power supply)
ÇAÄ ÇAÄ
(freeze) (freeze)
( limits ) ( limits )
EÉ EÉ
EÇ EÇ
Ä Ä
(cleaning system) (cleaning system)
162 162
(R option) (R option)
ÄÅÆÇÈÉÉ ÄÅÆÇÈÉÉ
Relay without any function Relay without any function
Contact is closed when power is applied and opens if Contact is closed when power is applied and opens if
there is a power fail there is a power fail
Is active if the measured value is frozen - e.g. during Is active if the measured value is frozen - e.g. during
calibration calibration
Operates as an upper/ lower limit indicator and is Operates as an upper/ lower limit indicator and is
active on exceeding/untercutting the rated value active on exceeding/untercutting the rated value
Pulse regulation (only for pH) Pulse regulation (only for pH)
Frequency regulation (only for pH) Frequency regulation (only for pH)
Relay is used to periodically control an external probe Relay is used to periodically control an external probe
cleaning unit. The relay exclusively works as a cleaning unit. The relay exclusively works as a
normally open contact. During the cleaning process, normally open contact. During the cleaning process,
the measured value remains frozen. the measured value remains frozen.
Configuration Configuration