Bitzer Group Lodam OLC-K1 User manual

Lodam Optical Level Controlling Devices
Technical manual
Version 3.0
OLC-D1, OLC-K1

Page 2
Contents
1. Read this first ................................................................................................. 4
1.1. Reading instructions.......................................................................... 4
1.2. User manual..................................................................................... 4
1.3. Safety .............................................................................................. 4
2. General ......................................................................................................... 5
3. Definitions..................................................................................................... 5
4. Functions ...................................................................................................... 6
4.1. Level monitoring............................................................................... 6
4.2. Oil level monitoring .......................................................................... 6
4.3. Level monitoring in vessels............................................................... 6
4.4. Red LED status light......................................................................... 6
5. Examples of application use .......................................................................... 7
5.1. Oil level monitoring on a compressor – direct start............................ 7
5.2. Oil level monitoring on a compressor – part-winding ........................ 8
5.3. Legend for the schematic diagrams ................................................. 9
5.4. Connections .................................................................................... 9
6. Technical data............................................................................................... 10
7. Drawings........................................................................................................ 11
7.1. OLC-D1.............................................................................................. 11
7.2. OLC-K1............................................................................................. 12
8. Standards ..................................................................................................... 13
8.1. The product is designed according to the following standards........... 13
8.2. The product is tested according to the following standards .............. 13
9. Troulbe shooting ........................................................................................... 13
9.1. Check the LED on the OLC ................................................................ 13
10. Index ........................................................................................................... 14
11. Notes............................................................................................................ 15

Technical manual OLC-D1, OLC-K1
Page 3

1. Read this first
The contents of this manual are subject to change without
notice. Lodam electronics holds the copyright to this user’s
manual. The user shall follow any instructions given in this
user manual entirely and not only partly. Any non-follow-
ing of this user manual result in exclusion of all warranties,
guarantees, and liabilities. Copyright© 2014 by Lodam
electronics a/s. All Rights Reserved.
Disposing of the parts of the controller:
INFORMATION FOR USERS ON THE
CORRECT HANDLING OF WASTE ELECTRI-
CAL AND ELECTRONIC EQUIPMENT (WEEE)
In reference to European Union directive 2002/96/
EC issued on 27 January 2003 and the related national
legislation, please note that:
1. WEEE cannot be disposed of as municipal waste and
such waste must be collected and disposed of sepa-
rately;
2. The public or private waste collection systems defined
by local legislation must be used. In addition, the equip-
ment can be returned to the distributor at the end of its
working life when buying new
equipment;
3. The equipment may contain hazardous substances:
the improper use or incorrect disposal of such may
have negative eects on human health and on the
environment;
4. The symbol (crossed-out wheeled bin) shown on the
product or on the packaging and on the instruction
sheet indicates that the equipment has been intro-
duced onto the market after 13 August 2005 and that it
must be disposed of separately;
5. In the event of illegal disposal of electrical and elec-
tronic waste, the penalties are specified by local waste
disposal legislation.
1.1. Reading instructions
The following symbols are used to draw the reader’s
attention to dierent warning levels.
Important information.
Danger!! General danger.
Danger of electrical current or voltage.
1.2. User manual
Before installation the user should be thoroughly
familiarized with this user manual, especially with
purposes, installation and operation.
Special care should be taken when installing and connect-
ing external equipment (high voltage etc.) and handling
the modules correctly according to protection against ESD.
Installation of the OLC-D1/OLC-K1 must be
performed by authorized personnel only. All valid
national legislations regarding electrical installa-
tions must be observed.
All warranties are excluded in case installation is per-
formed by unauthorized personnel or in case the OLC-D1/
OLC-K1 has not been correctly installed.
1.3. Safety
The OLC-D1/OLC-K1 is a protection device and not
a safety component according to the Machinery
Directive and cannot be used in “medical” or “life
support” equipment.
Before plant commissioning the service technician shall
ensure that personal safety requirements are met in
conformity with the Machinery Directive on the basis of
safety estimations.
Electrical plant failures are to be immediately
solved, even though no immediate danger exists;
the OLC-D1/OLC-K1 must be without power.
Page 4

2. General
The OLC-D1 and OLC-K1 are Optical Level Controlling de-
vices. The OLC-K1 is for monitoring oil level in compressors
while the OLD-D1 is for controlling levels in vessels.
The relay in OLC-K1 is used in the safety chain for the
compressor and will open and lock-out in case of a failure.
OLC-D1 is meant for keeping a specified level in a vessel by
turning the relay on and o.
3. Definitions
Product range
Definitions
ESD Electro Static Discharge
HW Hardware/electronics
OLC Optical Level Controller
NC Normally Closed (relay)
NO Normally Open (relay)
Technical manual OLC-D1, OLC-K1
Page 5

4. Functions
The OLC series consists of the two models, OLC-D1 and
OLC-K1. They have dierent monitoring functions which
are listed in the following.
4.1. Level monitoring
The OLC series consists of a screw-in prism unit and an
optical level detection device. The prism unit is installed in
the compressors oil chamber or in the vessel.
The level detection device can be replaced without open-
ing to the pressurized part of the compressor or vessel.
Detection of the level is via infrared light. There is a built-in
monitoring system for correct installation.
4.2. Oil level monitoring
The OLC-K1 is used for contactless oil level monitoring in
compressors in order to safeguard sucient lubrication of
the internal mechanics.
As the refrigerant can be absorbed by oil, fluctuation of
the oil level in the compressor is common in refrigeration
systems and thereby oil levels need to be monitored.
OLC-K1 is for compressor use and locks out if oil level is
not sucient after 90 seconds of compressor operation.
4.3. Level monitoring in vessels
The OLC-D1 is meant for level monitoring in vessels and
does not have the operation recognition input needed for
compressor operation.
The OLC-D1 releases the relay if the level is too low and
activates the relay if the level is valid. There is a 5 seconds
time delay between switching the relay.
4.4. Red LED status light
At start-up, the OLC will flash shortly with the LED. After
approx. 3 seconds the relay will be activated.
For OLC-D1 the level monitoring starts immediately; for
the OLC-K1 monitoring starts when the D1 signal is applied
and after the 90 seconds delay time the level is evaluated.
If the oil level is too low or there is a failure, the relay will be
opened and the LED will signal the failure.
• LED O: Oil level good, no failures
• LED On: Oil level low
• LED flashing: OLC not correctly mounted, or Supply
voltage too low, or Internal failure
Page 6

5. Examples of
application use
5.1. Oil level monitoring on a
compressor – direct start
13121110987654321
L1 L2 L3
N
PE
F1 1
0Q1
F2
K1
10
F13 8
1 32
M1 M3
R1..3
F3 4A
0 1
S1
L
1 2
11 B1 B2
SE-B1/ SE-B2
SE-B3 / SE-B4
N12 14
OLC-D1 / OLC-K1
R7, option
4 3H1
F13 3
C
NC
D1
NO N
H2
K1
10
P>
F5
P<
F6
B1
K2T 12
K1
3/3/3/11
12/13
F4
K1
10
K1
10
K2T R8
F12
Please see details regarding connection inside the terminal box
Grey Violet
Blue
Only
OLC-K1
0 1
S2
Brown
L
Pink Orange
(Reset)
4A
10
Technical manual OLC-D1, OLC-K1
Page 7

5.2. Oil level monitoring on a
compressor – part-winding
19181716151413121110987654321
L1 L2 L3
N
PE
F1 1
0Q1
F2
K1
10
F13 10
1U1
1W1
1V1
M1
M3
R1..6
F3 4A
L
1
2
11 B1 B2
SE-B1 / SE-B2 /
SE-B3 / SE-B4
N12 14
R7, option
H1
K1
3/3/3/12/
15/16/
18/19
K1 10
K2
14
K1
10
K1
10
ϑ
B2
Y2 Y3 K2T
R8
F12
4A
10
Please see details regarding connection inside the terminal box
Option
K2
14
F14 10
2W1
2U1
2V1
K1T
5/5/5/17
14
max 0.5 sec
0 1
S1
S2
(Reset)
OLC-D1 / OLC-K1
H2
K1
10
Grey Violet
Blue
Brown
Pink Orange
S3
(Reset)
P>
F5
P<
F6
K2T 18
F13 3 F14 5
ϑ
B1
K2
K1T 11
K1 10
Y1
K2 14
Option
Option
300 sec
15
D1
Only
OLC-K1
F4
C L
NONC N
Page 8

5.3. Legend for the schematic
diagrams
5.4. Connections
Legend
B1 Control unit
B2 Control unit of capacity regulation (option)
F1 Main fuse
F2 Compressor fuse
F3 Control circuit fuse
F4 Oil level switch
F5 High pressure cut-out
F6 Low pressure cut-out
F12 Fuse of crank case heater
F13/F14 Thermal overload motor PW1 / PW2
H1 Signal light “Compressor over temperature fault”
H2 Signal light “Oil supply fault”
K1/K2 Motor contactors PW1 / PW2
K1T/K2T Time relays “part winding” / pause time
M1 Compressor
Q1 Main switch
R1..3/R1..R6 PTC sensors in motor windings
R7 PTC sensor in cylinder head/discharge gas tempera-
ture sensor (option)
R8 Crank case heater (option)
S1/S2/S3 Control switch
Y1 Solenoid valve “start unloading” (option)
Y2 Solenoid valve “liquid line”
Y3 Solenoid valve “capacity regulation” (option)
View colour Function
Brown L; Phase
Blue N; Neutral
Grey C; Common signal
Orange NO; Normal open
Pink NC; Normal closed
Violet (only OLC-K1) D1; Compressor running
Technical manual OLC-D1, OLC-K1
Page 9

6. Technical data
Description OLC-D1 OLC-K1
Supply voltage 115 VAC; ±10%, 50/60 Hz, 3VA /
230 VAC; ±10%, 50/60 Hz, 3VA /
24 VAC/VDC, ±10%, 50/60 Hz, 3VA
115 VAC; ±10%, 50/60 Hz, 3VA /
230 VAC; ±10%, 50/60 Hz, 3VA
Max media temperature +120°C +100°C
Lock-out Failure Failure
Low oil level
Wires in cable 5 6
Compressor-start signal input No Yes; violet wire
Permitted ambient temperature Operation: -30°C – +60°C
Storage: -30°C – +80°C
Relative humidity Max. 95%RH non-condensing. Circuit board is
coated
Relay Switch voltage 240 VAC, min 24 VAC
Continuous current max 2.5A, min 20mA
Switching capacity 300 VA,
C300 (pilot type use according to UL508)
Fuse required Max 4A, fast-blow
Enclosure class Housing IP54; cable outlet pointing downwards
Mounting of the detection circuit Screw mounted, M24
Max. tightening torque: 10 Nm by hand only
Reset of lock-out state Interrupt supply power for min. 5 seconds
Cable length 2050 ±50 mm 950 ±50 mm
Weight 252 g 152 g
Dimensions 55.5 mm (w) x 87.0 mm (d) x 57.5 mm (h)
UL file number E348183
Page 10

7. Drawings
7.1. OLC-D1
83,0
±1,0
(6)
39,0
±1,0
(4)
83,0 to 87,0 (5)
57,5
±2,0
(3)
2050
50 (2)
75,0
±5,0
(1)
Ø29 Screw on Cap
M24x1 Internal thread
(8)
55,5 1,0 (7)
LED
Technical manual OLC-D1, OLC-K1
Page 11

7.2. OLC-K1
83,0
±1,0
(6)
39,0
±1,0
(4)
83,0 to 87,0 (5)
75
5 (1)
57,5
±2,0
(3)
950
50 (2)
Ø29 Screw on Cap
M24x1 Internal thread
(8)
55,5 1,0 (7)
LED
Page 12

8. Standards
8.1. The product is designed
according to the following
standards
• 2002/95/EC RoHs compliance
• 2006/95/EC Low Voltage Directive (LVD)
• 2004/108/EC Electromagnetic Compatibility (EMC)
• 61010-1 Safety requirement for electrical equipment for
measurement and control
• 61000-6-x Generic EMC
8.2. The product is tested accord-
ing to the following standards
• EN 61010-1 Safety requirement for electrical equipment
for measurement and control
• EN 61000-6-1 (EMC, Immunity for residential, commer-
cial and light-industrial environments)
• EN 61000-6-3 (EMC, Emission standard for residential,
commercial and light-industrial environments)
• UL 60730
• UL file number E348183
• CE marked
9. Troulbe shooting
• Check if there is power to the unit according to specifica-
tion. If the power is ok,
• Turn o the power for 5 seconds and see if the relay is
energized after power on again.
If not, turn o all the power to avoid risk of injury!
9.1. Check the LED on the OLC
• ED O: Oil level good, no failures
• LED On: Oil level low – there could be a leak or the oil is
somewhere else in the cooling system and unavailable
for the compressor
• LED is flashing:
1) OLC is not correctly mounted – check that the device
is mounted correctly in the prism and the turn-ring is
tightened properly. If the LED flashes during start-up
there may be foreign light entering the prism from
outside
2) The supply voltage might be too low. Check voltage
levels
3) The device has an internal fault and needs replace-
ment
Technical manual OLC-D1, OLC-K1
Page 13

10. Index
A
Application use 7
C
Connections 9
D
Definitions 5
Drawings 11
F
Functions 6
L
Legend 9
S
Safety 4
Standards 13
T
Technical data 10
Troulbe shooting 13
Page 14

11. Notes
Technical manual OLC-D1, OLC-K1
Page 15

Innovative and energy saving
climate control
When it comes to climate control Lodam is one of the most experienced you can turn to. For
more than four decades we have developed, produced and implemented electronic solutions
dedicated to optimising applications like:
• Compressors
• Condensing units
• Heat pumps
• Air conditioning
• Refrigerated truck and trailer
• Reefer containers
We know the importance of reliable, energy-ecient operation – and constantly push techno-
logical boundaries to bring you the most innovative and forward-thinking solutions.
As part of the BITZER Group we are backed by one of the world’s leading players in the
refrigeration and air conditioning industry. This alliance provides us with extensive network and
application knowhow and allows us to stay at the forefront of climate control innovation. And
to help ensure comfortable surroundings for humans and reliable protection of valuable goods
anywhere in the world.
Lodam electronics a/s
Kærvej 77
6400 Sønderborg
Denmark
Tel. [phone]
Fax [phone]
[e-mail]
For more information visit:
www.lodam.com
10-07-2015 Contents are subject to change without notice.