Operating and Maintenance Instructions : FCU 2110-5 / FCU 2210-5
Edition 1.10
HYDAC Filtertechnik GmbH
Page 29 of 52
7 Using the FCU
7.1 Measurement Operation
7.1.1 M1: “Measure” Function
MODE-key
M1: Measure
M2: M switch
M3: Filter to
M4: Filter from to
start
ok
M5: M autostop
Purpose
Mode
M1 "Measure"
is used for conveniently measuring oil purity without using the control
functions.
Typical Application
Fast measurement of system purity rating according to NAS (only FCU 2110-5) or ISO.
Operation
Start
measurement
:
Stop
measurement
:
ok
start
stop
7.1.2 M2: "M Switch" Function
Purpose
Mode
M2 "M Switch"
is used for measuring the purity of the oil in the hydraulic
system, at the same time offering the possibility of controlling the limit value relay for
signaling purposes. This means that this menu enables the user to have external devices
switched by two relays for warning purposes (Alarm), e.g. an alarm indicator lamp on a
control panel.
Possible reference values for triggering a switching sequence:
1. Sensor flow rate
2. Purity rating of the hydraulic fluid (indicated according to NAS (only FCU 2110-5) or ISO)
Typical Application
Signal switching relayed to a control panel of fully automatic test stands.