Default Valve State; Hardware Controls; Multifunctional Switch; Normal Operating Functions - BRONKHORST ES-FLOW 1 C Series Instruction Manual

5.4.2

Default valve state

When the instrument is not powered or cannot communicate with the fieldbus network (if applicable), the control valve
automatically returns to its default state, which is closed for 'normally closed' valves (n/c) and fully open for 'normally open'
valves (n/o). Taking into account the typical process conditions under which the instrument is used (such as the processed
media and ambient conditions; see also
5.5

Hardware controls

On top of the housing the instrument is equipped with a multifunctional switch (fn) and three
indication LEDs:
Status Communication interface status
Mode/MOD Operational mode
Error/NET Error/warning indication
During normal operation the Mode/MOD indicator is lit green
·
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indicator flashes red
· During initialization and special procedures, the Mode/MOD indicator blinks or flashes.
· See the troubleshooting guide
· Several other indications are specific to the installed communication interface.
The Status LED is functional only if the instrument is equipped with an Ethernet based fieldbus interface.
·
· Consult the according interface manual
5.5.1

Multifunctional switch

Some special instrument functions can be started manually using the multifunctional switch near the indication LEDs. These
functions are available in analog as well as in digital operation mode.
5.5.1.1

Normal operating functions

· In order to access these functions, press and hold the switch while the instrument is in normal operation mode (green
LED lit continuously).
As long as the switch is held, the LEDs show a repeating sequence of patterns, where each pattern indicates a function.
·
· All patterns in this sequence are continuous.
Each pattern is shown for a number of seconds; in the table below, the column labeled Hold time indicates the time frame
·
within the sequence during which a pattern is shown.
· To start a function, release the switch when the LEDs show the pattern of the required function.
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(green) (red)
off off
off off
off on
on off
on on
· See Adjusting zero point
Do not perform a zeroing procedure before having taken notice of the instructions.
·
9.17.153A
Intended use), the default state is generally considered safe.
when data is being transferred.
for general error indications and possible causes.
for a list of all indications.
Hold time Function
0...1 sec No action
1...4 sec 1. In case of a min/max alarm: reset alarm
2. FLOW-BUS: Auto-install to bus - lets instrument obtain free node address if
configured node address is occupied
Note: min/max alarm (if any) has to be reset before auto install can be performed.
4...8 sec Reset instrument; clear all warnings and error messages and restart the instrument
8...12 sec Auto-zero; re-adjust the zero-point of the instrument (flow meters/controllers only)
12...16 sec Enable FLASH mode for firmware update:
· the instrument shuts down and both LEDs are switched off
at the next power-up, the instrument will be active again
·
for background information and instructions on how to adjust the zero point of an instrument.
Instruction Manual ES-FLOW™ 1xxC
Bronkhorst®
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continuously, while the Error/NET
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