Bucher C-LRV Series Installation manual

C
−LRV Lift Control Valve, Size 175 / 350 / 700
NTA−2 power supply unit and C−DELCON
Issue: 08.08
Installation and startup guide
1/92Classification: 450.500.500
Reference: 300−I−9010212−E−10/08.08

C−LRV lift control valve
2/92
300−I−9010212−E−10/08.08
Published
Bucher Hydraulics AG
Industriestrasse 15
CH−6345 Neuheim
Phone [phone]
Fax [phone]
Email[email protected]
Internet www.bucherhydraulics.com
E2008 by Bucher Hydraulics AG, CH−6345 Neuheim
All rights reserved. This installation and commissioning guide, in whole and/or in part, is protected
by copyright. It may not be reproduced, nor may it be stored, processed, replicated or distributed
by electronic means, without written permission from Bucher Hydraulics AG.
Data is provided for the purpose of product description only, and must not be construed as war-
ranted characteristics in the legal sense. No assertion regarding either a particular property or the
fitness for a particular intended purpose can be derived or deduced from this information. The in-
formation does not relieve users from the duty of conducting their own evaluations and tests.
Because the products are subject to continual improvement, we reserve the right to amend the
product specifications contained in this catalogue. The original language and legal terminology of
all Bucher Hydraulics AG documentation is exclusively German. Bucher Hydraulics AG cannot be
held liable for any possible errors in translation.

C−LRV lift control valve
3/92
300−I−9010212−E−10/08.08
Content Page
0 General 5
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0.1 Target group 5
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0.2 Supplementary documents 5
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0.3 Specialist terms 5
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1 Product description 7
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1.1 Important notes 7
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1.1.1 Subassemblies 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1.2 intended use 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1.3 Conformity 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 Product identification 9
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1.2.1 Nameplate 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2.2 Test number 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2.3 Model code 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3 C−LRV lift control valve 11
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1.3.1 Simplified hydraulic–electrical diagram 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3.2 Factory settings 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3.3 Description of function 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3.4 Technical data 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3.5 Pressure drop 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4 C−DELCON electronic card 20
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1.4.1 Factory settings 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4.2 Description of function 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4.3 Technical data 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4.4 Travel and switching diagram for normal travel distance 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4.5 Travel and switching diagram for short travel distances 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.5 NTA−2 power supply unit 26
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1.5.1 Description 27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.5.2 Technical data 28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.5.3 Terminal assignments 29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.6 IWK−1 feedback cable 31
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1.7 Surroundings 32
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1.8 Emissions 32
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2 Safety information 33
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3 Operating controls and indicators 35
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3.1 Emergency−lowering valve 36
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3.2 Display of the operating status 36
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3.3 Handterminal 37
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3.4 WinDelta32 −PC program 41
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3.4.1 General description 41. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4.2 PC requirements 42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4.3 Installation on PC /Laptop 42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4.4 Connect DELCON to PC /Laptop 45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

C−LRV lift control valve
4/92
300−I−9010212−E−10/08.08
4 Installation and commissioning 47
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4.1 Installation 47
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4.2 Assembly 48
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4.2.1 Hose or pipe 48. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2.2 Power supply unit 48
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4.2.3 Wiring the power supply unit 49. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2.4 Electrical emergency−lowering 2x24 VDC 50. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2.5 Electrical emergency−lowering 1x12 or 1x24 VDC (option) 51. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.3 Commissioning/settings 52
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4.3.1 Checking the test numbers 52. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.3.2 Checking the minimum static pressure 52. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.3.3 The bypass pressure setting 53. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.3.4 The maximum pressure setting 56. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.3.5 The demand/feedback response difference, SIU−1 56. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.3.6 Speed−monitoring in the door zone, SIU−4 57. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.3.7 The inspection−travel speed setting 57. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.3.8 Positioning the shaft switches for the deceleration distance 58. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.3.9 Required deceleration distance 59. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.3.10 Setting the mechanical null point 60. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.3.11 Pilot filters 61. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.3.12 The pipe−rupture valve test 62. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 Operation 65
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5.1 Handterminal 65
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5.1.1 Parameter overview 65. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.1.2 Overview of travel curve 66. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.1.3 Overview of control parameters (PID) 66. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.1.4 Description of parameters 67. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.2 Calculating the demand values for maximum speed 79
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5.3 Faults /Fault−finding 80
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5.3.1 Check list for fault correction 80. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.3.2 Fault description 84. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.3.3 Code for further details 87. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6 Maintenance 89
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6.1 Maintenance schedule 89
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6.2 Operating materials and aids 90
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6.3 Installation guide for DOWN pilot valve 91
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6.4 Customer service information 92
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C−LRV lift control valve
5/92
300−I−9010212−E−10/08.08
0 General
This guide is an integral part of the product. It describes the product´s
safe use in all phases of operation and is valid for all model series that
are referred to.
0.1 Target group
SOperator
SInstaller
SService engineer
SRepair technician
0.2 Supplementary documents
Description Document
Quick−start guide for valve 300−P−9010169
0.3 Specialist terms
Term Definition
C−DELCON Electronic control card for C−LRV valve

C−LRV lift control valve
6/92
300−I−9010212−E−10/08.08

C−LRV lift control valve Product description
7/92
300−I−9010212−E−10/08.08
0
1 Product description
1.1 Important notes
1.1.1 Subassemblies
This guide differentiates between the following subassemblies:
C−LRV lift control valve
C−DELCON electronic control card NTA−2 power supply unit

C−LRV lift control valve Product description
8/92
300−I−9010212−E−10/08.08
1.1.2 intended use
Lift control valve for operating hydraulically−driven passenger and goods
lifts.
The products must not be handled in any way by unauthorised persons.
1.1.3 Conformity
The product was designed and developed in conformity with the follow-
ing standards:
Standards EN 81−2
EC 95/16
BS 5655 Part 2
SIA 370−11
EMC standards EN 12015
EN 12016
IEC 1000−4

C−LRV lift control valve Product description
9/92
300−I−9010212−E−10/08.08
1.2 Product identification
1.2.1 Nameplate
12
6789
345
C−LRV 175 − 120 / 150 − 21 / 45
R 250 − K 251 / 6−80 / 55 bar
1 Valve type = C−LRV 175
2 Flow rate UP = 120l/min
3 Flow rate DOWN = 150l/min
4 Minimum static pressure (empty car)
= 21bar
5 Maximum static pressure (full car)
= 45bar
6 Flow ring = R250
7 Spool = K251
8 Setting range = 6–80 bar
9 Set for maximum working pressure
= 55bar
1.2.2 Test number
2
1
Legend 1
2
Test number
Nameplate

C−LRV lift control valve Product description
10/92
300−I−9010212−E−10/08.08
1.2.3 Model code
C−DELCON type
without C−DELCON = D0
with C−DELCON (SIU 1 + SIU 4) = D1
Flow range: flow rate/type
C−LRV 175 15–45l/min = R 45
46–90l/min = R 90
91–250l/min = R 250
C−LRV 350 251–500l/min = R 500
C−LRV 700 400–1000l/min = R 1000
R 250 K 251 VN D0////C−LRV 175
Spool: flow rate/type
C−LRV 175 15–90l/min = K 91
91–250l/min = K 251
C−LRV 350 251–500l/min = K 501
C−LRV 700 400–1000l/min = K 1001
Valve type/size
= C−LRV 175
= C−LRV 350
= C−LRV 700
Manual emergency−lowering valve
Emergency−lowering valve with preload = VN

C−LRV lift control valve Product description
11/92
300−I−9010212−E−10/08.08
1.3 C−LRV lift control valve
Legend 1
2
4
5
6
7
8
9
10
11
Maximum−pressure setscrew
Bypass−pressure setscrew
Pressure−relief valve
Pilot filter
Test point, G½
Pressure gauge
Pressure gauge shut−off screw
Air−bleed screw
Feedback sensor
Main filter
12
13
14
15
16
17
18
20
22
Flow−rate measuring system
Emergency−lowering valve
DOWN spool
Check valve
UP spool
UP damping jet
DOWN damping jet
Ball valve
Hand pump
Z1
Z2
Z3
Pressure switch port
Pressure switch port
Hand pump port
P
T
Z
D
Pump port
Tank port
Cylinder port
Control cabinet (customer’s)

C−LRV lift control valve Product description
12/92
300−I−9010212−E−10/08.08
1.3.1 Simplified hydraulic–electrical diagram
M
Legend 4
6
7
8
10
11
12
13
Pressure−relief valve
Test point, G½
Pressure gauge
Pressure gauge shut−off screw
Feedback sensor
(non−contacting)
Main filter
Flow−rate measuring system
Emergency−lowering valve
14
15
16
20
21
22
23
24
DOWN spool
Check valve
UP spool
Pipe−rupture valve
Ball valve
Electrical emergency−lowering
valve (optional)
Pressure switch
Hand pump
Z1
Z2
Z3
P
T
Z
Pressure switch port
Pressure switch port
Hand pump port
Pump port
Tank port
Cylinder port
R1
R2
A
B
C
D
to EN81−2, 12.4.1/12.4.2
to EN81−2, 12.4.1/12.4.2
C−DELCON
NTA−2
C−LRV
Control cabinet (customer’s)

C−LRV lift control valve Product description
13/92
300−I−9010212−E−10/08.08
1.3.2 Factory settings
All valves are factory−set to the values for the particular installation and
then tested.
SPressure−relief valve set to the maximum working pressure
SBypass pressure as per the calculated minimum static pressure
SMechanical null point of the feedback sensor
SEmergency−lowering valve set to 5−10% of maximum DOWN speed
1.3.3 Description of function
The lift control valve can be subdivided into 3 main functions.
1. Up section / pressure−relief valve
4
16
1
SInitial position:
UP spool (16) is open in the 0 position; pump flow goes directly to
tank
SUp travel / acceleration:
UP spool (16) is progressively closed by the electro−proportional
valve (UP solenoid); this results in smooth acceleration of the lift up to
maximum speed
SDeceleration:
UP spool (16) is progressively opened by the electro−proportional
valve (UP solenoid); this results in smooth deceleration of the lift to
standstill
SOverload:
pressure−relief valve (4) and UP spool (16) open when the maximum
working pressure set with screw (1) is reached

C−LRV lift control valve Product description
14/92
300−I−9010212−E−10/08.08
2. DOWN section / emergency−lowering valve
13
14
The down section is constructed in a similar way to the up section.
SInitial position:
DOWN spool (14) is closed leak−free in the 0 position
SDown travel / acceleration:
DOWN spool (14) is progressively opened by the electro−proportional
valve (DOWN solenoid); this results in smooth acceleration
SDeceleration:
DOWN spool (14) is progressively closed by the electro−proportional
valve (DOWN solenoid); this results in smooth deceleration of the lift
to standstill
SPower failure / evacuation:
With the electrical emergency−lowering valve (optional), the car can
be lowered using DC voltage (⇒4.2.4)
SThe car can be lowered slowly with the manual emergency−lowering
valve (13)

C−LRV lift control valve Product description
15/92
300−I−9010212−E−10/08.08
3. Flow−rate measuring system
10
12
SThe oil flows through the flow meter (12) in both the up and down
directions
SThe baffle−disc is displaced axially as a function of the flow rate
SThis axial displacement is converted by a non−contacting feedback
transducer (10) into an electrical DC signal (the feedback signal),
which is then sent to the C−DELCON
SThe output signal (the feedback) is proportional to the flow rate
SThe controller in the C−DELCON works to match the feedback value
to the demand signal

C−LRV lift control valve Product description
16/92
300−I−9010212−E−10/08.08
1.3.4 Technical data
300−7−10015573
H*
R*
L*
a
A
Legend 1
2
3
4
Flow−rate measuring system
Pressure−relief valve
DOWN solenoid
UP solenoid
5
6
7
aView A
Z1
Z2
Z3
P
T
Z
Pressure switch port
Pressure switch port
Hand pump port
Pump port
Tank port
Cylinder port
H*
L*
R*
Orientation of Z port
(specify when ordering!)
rear (standard)
left
right

C−LRV lift control valve Product description
17/92
300−I−9010212−E−10/08.08
Type Ports Ports Weight Max. press.
Z, T, P Z1, Z2, Z3 [kg] [bar]
C−LRV 175 G1 G¼ 8 80
C−LRV 350 G1½ G¼ 11 80
C−LRV 700 G2, G2½, G2 G¼, G¼, G3/822.5 67
Type Dimensions [mm]
b c d e k L m n p1 p2 s1 s2 t v1 v2
C−LRV 175 199 325 167 207 50 47 55 175 21 27 75 15 M8 9 23
C−LRV 350 219 355 190 207 65 48 63 200 35 38 85 25 M10 14 28
C−LRV 700 297 428 255 225 80 87 83 265 48 56 124 41 M10 30 30
Type Flow range Spool (K) Viscosity range* Max. oil temperature*
Q [l/min] Ring R Q [l/min.] K[cSt] (mm@/s) [°C]
C−LRV 175
15–45
46–90
91–250
R45
R90
R 250
15−90
91−250
K 91
K 251 30–300 0 ... 60
C−LRV 350 251–500 R500 251–500 K 501 30–300 0 ... 60
C−LRV 700 400–1000 R1000 400–1000 K 1000 30–300 0 ... 60
* Note the viscosity range and minimum oil temperature. For detailed information, see 6.2, page 90

C−LRV lift control valve Product description
18/92
300−I−9010212−E−10/08.08
1.3.5 Pressure drop
C−LRV 175
0.0
2.5
5.0
7.5
10.0
12.5
15.0
20 50 90 100 150 180 200 250
R45 R90 R250
Spool K 91
Spool K 251
A
B
Flow ring (R)
DOWN (Z−T)
UP (P−Z)
DOWN (Z−T)
UP (P−Z)
C−LRV 350
0.0
2.5
5.0
7.5
10.0
12.5
15.0
250 275 300 325 350 375 400 425 450 475 500
R500
A
B
Flow ring (R)
Spool K 501
Legend A
B
Pressure drop [bar] Min. required dyn. pressure
Flow rate Q [l/min.]
300 cSt (HLP 46)
75 cSt (HLP 46)

C−LRV lift control valve Product description
19/92
300−I−9010212−E−10/08.08
0
2.5
5
7.5
10
12.5
15
400 450 500 550 600 650 700 750 800 850 900 950 1000
R1000
C−LRV 700
A
B
Flow ring (R)
Spool K 1001
DOWN (Z−T)
UP (P−Z)
Legend A
B
Pressure drop [bar] Min. required dyn. pressure
Flow rate Q [l/min.]
300 cSt (HLP 46)
75 cSt (HLP 46)

C−LRV lift control valve Product description
20/92
300−I−9010212−E−10/08.08
1.4 C−DELCON electronic card
The C−DELCON controls the oil flow − and therefore the lift’s travel pro-
file − in accordance with a preset curve.
Attention
Electrostatic discharge (ESD)
The C−DELCON can be damaged by incorrect handling.
Always keep the DELCON in its ESD protective bag and only hold it by
the spacer studs (4).
300−2−10012279
6
1
2
3
5
4
Legend 1
2
3
4
5
6
Nameplate
Label with Test number
Label with description of LED functions
Spacer studs M2.5x10
Label with Demand values
RESET button (restarts the program in the C−DEL-
CON electronic card)
1.4.1 Factory settings
SMaximum UP and DOWN speeds
SSlow speed set to 5−10 % of maximum speed
SAcceleration/deceleration set to mid−range value
SInspection travel speed set to 50 % of maximum speed