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2. Hydraulic data

2.1

General description

S The lift control valve system consists

of :
S LRV−1 Valve

S DELCON

S NTA−1/NTA−2 power supply unit

S IWK−1 feedback cable

S Power supply unit and DELCON are

installed in the lift system control ca-
binet

S Travel characteristics are indepen-

dent of load and viscosity − consi-
stent travel times

S Viscosity range 20 − 500 cSt

S A virtually continuous approach into

the stop position can be achieved

S Very comfortable travel up to 1 m/s

S Simple setting of UP and DOWN

speeds via Handterminal or PC
S 4 adjustable settings for fast and

slow

S 2 adjustable settings for relevelling

speed

S 4 adjustable settings for accelera-

tion and deceleration

S 2 adjustable settings for soft−stop

deceleration

S 3 adjustable settings for short tra-

vel distances

S 1 adjustable setting for inspection

speed

S Valve and DELCON factory−set to

the particular installation parameters

S Factory settings are permanently

stored in the DELCON

S Installation parameters can be easily

checked and adjusted by means of
hand−held terminal or PC

2.2 Valve sizes

Technical data

Design type:

Block design with threaded ports, comprising:
S Pressure relief valve

S Non−return valve

S Two−stage, proportional UP and DOWN valve

S Non−contacting Hall Effect feedback sensor (displacement

measurement system)

S Main and pilot filter

S Self−closing manual emergency−lowering device with pre−

load (dead man’s handle)

S Pressure gauge with shut−off valve

S G ½ test port/Test nipple (optional)

S Electrical emergency−lowering device (optional)

Regulations:

As per TRA 200 / EN 81−2 / BS 5655 Part 2 / SIA 370−11

LRV

Flow range Q [l/min.]

Viscosity range [cSt]

Oil temperature [°C]*

Working pressure [bar]

Ring R

Q [l/min.]

min./max.

max.

175−1

R45

R90

R175

R250

15 − 45

46 − 90

91 − 175

176 − 250

500

350−1

R350

R500

251 − 350

351 − 500

20 − 500

700−1

R700

R1000

401 − 700

701 − 1000

* Note the viscosity range and minimum oil temperature. For detailed information, see data sheet 450.20.90.01