Electrical Connections; Led Statuses; Start-Up Procedure - Bühler technologies Nivotemp NT 67-XP Guía Rápida

Nivotemp NT 67-XP, Nivovent NV 77-XP
DANGER
Electric voltage
Risk of electric shock
When connecting devices, please note the maximum voltages
and currents currents (see technical data) and use the correct
wire cross-sections and circuit breakers.
When selecting the connection lines, also note the maximum
operating temperatures of the devices.
Installation in special areas of application:
If the device will be installed outdoors or in wet areas, the
maximum operating voltage is max. 16 V DC effective or 35 V
DC.
The flange-mounted display units can be swivelled vertically
by approx. 270° so they are easier to read. Please note the
built-in swivel stop. You will notice more resistance when
reaching the stop. Turning it beyond this stop may damage
the display unit.

4.2 Electrical connections

Electricity is supplied via plug connectors. Please refer to the
appendix for installation dimensions, nominal voltage and
plug configuration.
The temperature switching outputs are PNP transistors (see il-
lustration):
Supply voltage
Note: When measuring the switching output with high-load
measuring device inputs or when used as a frequency output,
the load must be set to 10 kΩ between the output and earth
(GND) to avoid faulty measurements.
5 Operation and control
NOTICE
The device must not be operated beyond its specifications.

5.1 Start-up procedure

The device will automatically switch on when connected to
power. It will first briefly display the software version, at
which time the device will also check the built-in components.
The display will then switch to displaying measurements.
The following describes the function of the display and control
unit:
BX100016 ◦ 02/2018
LEDs
Control keys
If an error message appears in the display during operation,
please refer to the Troubleshooting table under chapter "Ser-
vice and Repair".

5.2 LED statuses

LEDs above the measurement display indicate the status of
the switching outputs. The LEDs are permanently assigned to
the switching outputs.
The following table lists the factory settings for the liquid level
and temperature switching output configuration:
LED 1 – yellow
Status switching
output 1
LED 2 - red
Status switching
output 2
LED 3 – yellow
Status switching
output 3
LED 4 – red
Status switching
output 4
LED 5 – yellow
Status switching
output 5
LED 6 – red
Status switching
output 6
The switching characteristics of the LED (on if switching con-
tact closed or open) can be changed.
Display
2 4 6
Switch- Switch- Switch-
ing ing ing
outputs outputs outputs
Liquid Liquid Liquid
Level Level Level
Temper- Liquid Liquid
ature Level Level
--- Temper- Liquid
ature Level
Temper- Temper-
---
ature ature
--- --- Temper-
ature
Temper-
--- ---
ature
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