Lenze 7812 Parts list manual

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Table of conterits page
1. Features 2
2. Specifications 2
3. Conriecting diagram 3
4. Installation instructions 4
5. Conriectirig instructions 4
5.1 External set-value adjustment 4
5.1.1 Using poteritioxrieter 4
5.1.2 Using master voltage 4
5.1.3 Using current loop control 4
5.2 Controllerinhibit 5
5.3 Reversing and brakirig 5
5.4 Selectiori of tixed frequencies (speeds) 6
5.5 External temperature switch 7
5.6 External TRIP reset 7
5.7 Switching of the acceleration and deceleration ramp 7
5.8 Standstill iridication 8
5.9 ‚Identical freguency“ indication 8
5.10 Overload indication 9
5.11 TRIP relay 9
5.12 Frequencyoutput 10
5.13 I4ains connection 10
5.14 Motor connection 11
5.15 Connection of braking resistor(s) 11
6. Display and operating panel 12
7. Modification of factory-set paraineters 13
7.1 Keyboard operation 13
7.2 Furiotion code 14
7.3 Description of the function code 15
8. Fault diagnosis 27
9. Dimensionsand weights 28
10. Mains chokes 29
11. Semiconductor fuses and fuse holders 30
12. Braking resistors 31
?.ad%o i::terfe~er~ce suD~‘reE:i1Qn 32
:bers
1;ems supp1i~ Ii
32

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The Lenze inverter series 7800 comprises 8 frequency inverters for
standard three-phasemotors of powers from 2.0 to 20 kW.
1. Features
- Sinusaidal pulse width inodulation
- Isolated contro3. inputs
- Contro3. either externally or via keyboard
- Power outputs are short— and earth-circuit protected
- Set-value integrator with separately prograininable
acceleration and deceleration ramp
- U/f control
- Fault indication system including TRIP indication
- Tntegrated braking chopper
- Reversirig
- Preselection of 4 fixed speeds
- Option boards can be retrofitted
2. Specifications
Ty~e O.vtput
power
Output
voltage
Mains
vottage
50-60
Hz
Hains
current
at norn.
power
Nomin.
motor
power
Power
Loss
at 1=1
f=5OHz
Nca~in.
current
Maxin~j¶~
current
Output
frec~~ency
maxifrLrn
ma ter
vo?t age!
master
current
Ant~ient
teape-
rature
iL7~W
Dimensions
H x L X 0
ljeight
S /kVA
et
U /V
phase
U/ -
mains
/V
hA
eff
p /kW
N
Pv/w 1 IA 1 /A
max
f/Hz ULN/V
7811 3.3
0 ..
lJ 3
3x340 .
505V
4-Q%
4 2.0 100 5 7.5
0.5 ...
360Hz
0. .+/-10V
4 ..20 rnA
0 ...
400C
~3~x240x235
•430x240x2.35
10 kg
430x240x235
10.5 kg
430x240x235
11kg
480x280x235
16 kg
480x280x235
18.5 kg
565x280x235
20.5 kg
565X280X235
21.5 kg
8.5 7&12 5.6 7.5 3.7 180
112
118
1
13
7813 8 10.5 5.5 270 18
7814 12 16.5 7.5 360 27
7815 15 21.5 11 510 23 35
2 ...
240 Hz
7816 19 27.5 14 640 29 44
7817 24 35 17 760 37 55
7818 28 41 20 8.60 43 64

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3. Connecting diagram
Control stage
potentio~eter
Lmnaster voltage 0 to +10V
or 0 to
10V at teni-~inal 11 —
to terDlirlal 11
reversing (S1) brake (S2)
Power stage
muains choke
s~~ccndu~ztor
*
cable protectingtuse
- UG
overload
~nomina). = ~actuai
standstill
externaj. TRIP reset
external TRiP set
controller inhibit RSP
Tir/Tif extension
external speed
set value
external speed
set value
thret~—ph~se
I~otcr
TRIP
contact
capacity
250 V/2A-
speed set value __
sigriaj. current 4 to 2OmA
special
accessories

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4. Installation instructions
The controller should be fitted vertically with the terminals located
at the bottom. Ensure that there is a free space of
± :LOOin~ at the top and bottain, and 50 mm at the sides in order to
inaintain the flow of air tI~xrough the heat sink and controller. The
maxrmmm ambient temperature must not exceed 400C.
In case of an earth circuit fault, the mains choke limits the current
rise and improves the ~nains current factor. The 7800 inverter series
inust only be operated with specif led mains choke and sexni-conductor
fuses (see paint 10./il.).
5. Connectinc~ instructions
5..l External set—value
5..l.1 Usinc~ potentioxneter
(-) +10V
— Corrnect the enclosed
potentiometer 1 kfl linear
(part no..: 304 651) to
terminals 11, 12, 13,
ensuring that the wiper
of the potentiometer is
connected to l2~
5.1.2
— Connect the external master voltage
source to terminals 11 and 12.
Umaster max = 10 V
— For amaster voltage
of 0 to—lOV the wire link ~
UmastermaxiOV must be connected as
shown in the figure.
5..l..3 Usinq~ current loop control ~f~B3Ocf12
— Connect the external current source
between terminals 11 and Cl.
‚master = 4~- 20mA
- For giving speed control froln
a 0 to 2OmA current signal, ensure
that a 511 fl resistor
(‚-x=~t ;o. 225 ?D2) is c~nm-.ccted
— -~ —.
master

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5.2 Controller inhibit
— The controller is inhibited when
the RSP switch is closed.
— The controller is releasedwhen
the RSP switch is operied.
RSP
S7
USe low—current contacts
(12V/lOinA)
5.3 Reversincr and braking
- Clockwise rotation occurs with
switch 51 in FWD position,
assuming correct phase connection
of the motor
— Ariti-clockwise rotation occurs
with switch 51 in REV position
assulning correct phase connection
of the motor
— Braking occurs when switch
S2 is opened
Use low-current contacts
(12V/lOxnA)
FWD
SI
Qn
on
- - —i-----I------- —~--t
-‚Pn
REV k
si ~ fon
brakej 1
S2 ____ __________
T -~
II
~set ~‚~N‘c1ockw~se
, —‚
-1-
During reversal, the drive is
slowed down according to the
deceleration raxop, reverses at
n set- 0,5Hz and then
acceierates to the speed set—
value alcing the acceleration
ramp.
~-2~3rl th& ~wi~ch S2 is openec~,
— t~ ci~:fy~ is s.owed down
--~L..1¶ ~
-~ - s~. ~Q~U1J! accoroing
~ tI--~ v~1ue set c:~ thr.
Reversing
s1
~ti-clockwise

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5..4 Selection of fixed rotational field frecmencies
T
CMIX1 X2 Jogj
S3 S4 S5
Use bwcurrent
contacts (12V/lOmA)
xl
S3
lt
- lt all 3 switches are opened,
the drive is operated by the
set—value potentiometer,
master voltage, master current
or the internal setting.
- lt either Xl or X2 or both
terminals are connected to CM,
a constant prograiiuuable
f leid frequency is generated.
- In addition to this, lt the
terminal marked „JOG“, is
connected to CM, a tourth
progra~medfreq~uency is generated,
taking precedence over all
other preset frequencies. Four
different fixedspeeds can
therefore be selected
via simple switching action.
~~~1
f. 11
X2
S4
Jog
$5
„set
D3
tD2
~D1
~D set
D 4
t
— t

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5.5 External teniperature switch
Use low-current
contacts (12V/lOmA)
- Temperature swltches can be
connected to the terminal
muarked THIR, in order to supervise
the motor temperature or monitor
the temperature of the external
braking chopper resistors.
As soon as the contact is opened,
the inverter switches to show a
fault condition. (This f1lnction is
selt holding).
The display shows code OLl.
5.6 Bxternal TRIP reset
T
- RST can be used to provide
an external TRIP reset.
CMjRSTj
switch
59
Use low-current
contacts (12V/lOmA)
5.7 Switchinq- of the accelerationand deceleration ramp
- Using the terminal marked „Saft“
a second common acceleration and
deceleration time can be used.
S6
Use low—current
contacts (12V/lOm.A)
So!
k _______
page: 7
79.
S8
1‘

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5.8 Standstill indication
— The open collector transistor used tor
the standstill lndication function opens,
when, during the deceleration phase,
the pre—programmed frequency is reached.
The transistor remains open, until
the trequency f = 0Hz Is attained.
The minimum swltch-on tiine of the
transistor is lOOms.
‚max =5OmA
Umax =27V
5.9 ~Identical frecruency“ indication
‚max
Umax =27V
- The Open-Ccllector transistor
for the „frequency identical“
indication switches, when a programmed
freguency of the acceleration and
deceleration phase is reached.
The transistor is eriabled, until
the rotational field freguency is
identical with the compared treguericy
or the acceleration/deceleration
phase is not yet finished. The
minimum switching tlme of the
transistor Is lOOms.
(The signal can be used e.g. tor
switching ot the aoceleratlon/
deceleration ramp).
Compared frequency
- re. uer~cy
a~reemer~1
s~ ing
1 \ §S
1 .—
SAR O~ O~. O~ 0 ON O.~
tOO.~c ~O0~‘mc
SST
-= lOOms
< lOOms t3
> lOOms
~m~ 1OOfV~sec

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5.10 Qverload indication
‚max SOmA
Umax =27V
OL
- The open collector transistorused
tor the overload indication is enabled
in case of an overload which is
langer than 10 sec, and remains in
this state as long as there is an
overload.It is disabled one second
after the unload.
The threshold of the overload
indication can be changed by
subseguent programming ot the device.
5.11 TRIP relav
- lt the inverter switches to show a
fault condition, the TRIP relay
is activated. The contact switches
from 30B to 30A.
F
[3oA13 OB 1300
Coritact capacity
250V/2A-

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5.12 Frecruericv
a) Analogue
b 1 Digital
OMEM
885
M ~7
C2H1-
4~1
5
- An analogue measuring instrument
can be connected (Ri = 10km)
which is used to monitor:
0 — 10V tor 0 + 60HZ
or 0— 10V tor 0 — 120Hz
Adjustment using trlmmer ADJ
— A suitable measuring instrument is
a VSC analogue meter, part no. 326 893
- A digital display device can also
be connected giving:
=
24xfD at ~D~{AX 50Hz or 60Hz
~FM = l2XfD at tDI4AX=lOOHz
or 120Hz
~FM = GXfD at fD~~<=200Hz or 240Hz
Such a suitable digital meter would
be a 322 unit, part no. 326 884
5.13 Mains connection
PE L1 L2 L3
- L1, L2, L3 three-phases
340 to 505V ± 0%.
- Semiconductor fuses and
mains chokes are speclfied In the
tables on pages 30/31.
- On-otf mains switching should be
limited to once in every 3 minutes.
lt the motor must be released within periods of less than
3 minutes (e.g. jogging), the following circuit must be used.
FU 7800
Kl~j~ K2(j
K44D
= RFR
K24J
out~ut
motor Bx

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5.14 Motor corYnection
‚~ screened
motor cable
three-phase motor 3
— Ihe nominal motor voltage is
normally selected such that it
corresponds to the available
nominal mains voltage
e.g. 380V motor at 380V mains
460V motor at 460V mains
— lt the nominal mains voltage
exceeds the nominal motor
voltage, the inverte.r‘soutput
characteristic can be pro—
grammed as described urider
turietion code 10.
— Switching of the phases is only
permissible with the circuit as
described under polnt 5.13.
(*) Valid tor industrial plants and factories which must have
levels ot radio interferencesuppression in compliance with
VDE 0871. lt necessary, please consult the supplier.
5.15 Connection of braking resistor(s
)
— Application: Short braking times
with large masses.
— The energy produced in the „gene -
rator rnode“ is fed into the
DC link circuit ot the Inverter
and results in an iricrease of the
DC link voltage and current, when
operating without a braking chopper.
The inverter sets TRIP.
Fault indication: OC 2 or OU.
— Using a braking resistor or acti—
vating the internal braking chopper
(See tiinctlon code 23) causes the
excessive energy to be dlssipated
as heat.
The ~?D(~cified brake resistor~ ~re
1.sted in the table on page 21.
* ?or settir. ot the release
current see table an page 21).
brake resistor

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6. Display and operating unit
1
2
(
50 ~0 80 ~Q)0O%
40
___ 30/
—~; 1 A
lOj 2O2E~
Dl
~ SET 5~ LEI ST D~
31
4
1
6
7
8
9
1. Output trequency in percent (related to the maximum
frequency).
2. 7-segioent display tor output tre~uency/current
tor normal operation, or alternatively, tor the input
parameters during programming.
3. Selection key tor operating mode or program mode. (S2=0)
4. Switching key tor motor current display or motor treguency
during normal operation or key tor selection Dt each function
code during programlning mode.
5. ~ey tor storing new parameters in the program mode
and also tor storing the rotational tield trequency, when
set—value is entered via the keyboard.
6. Keys tor parameter setting when in the program mode, or for
trequency setting when the set trequency is entered via
the keyboard.
7. For stopping the motor with internal control.
8. For starting the motor with internal control.
9. Key tor TRIP reset.

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7. Moditication ot the factory—set parameters
7.1 Keyboaxd operation
In order to change the parameters, open the switch S2 (which
activates braking) so that the display is flashing. By pressing
the „PRG“ key, the inverter is switched to the program mode. The
tunction code is displayed in the twa lett segments. By pressing
the „SHIFT“ key the desired tunction code can be selected. After
this, the data code can be chosen using the keys marked ~1 1=11 ~
and „ 7 „. lt this value is the desired new parameter, press the
„SET“ key.
lt you want to change other paraxneters, select the next
tunction code using the „SHIFT“ key. lt all parameters are
modified as deslred, the inverter is swltched to the normal
operating mode by pressing again the „PRG“ key. After re-closing
the swltch S2, the inverter operates with the new set parameters.
~FTFi7T71
~9I§LLILI
1~z~
— SHIFT — — SET —

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7.2 Function code
Function Fug~tion Date code factory-set
code vatue
see
page
Display after Hz
switchlng on Anp
00 00
00 Hz
15
01
3 fixed pre- Freq.1
setectabte fre- Freq.2
qiencies (S3/S4) Freq.3
01
input in Hz
10 10Hz
02 20 20 Hz
03 30 30Hz
superirrposed fixed freq. 04 input in Hz 5 5Hz
first acceteration time 05 15 7. 5s
first deceleration tirr>e 06 16 lOs
second corrrnon acceleration
and deceleration time- (S6)
07 18 20s
etectronic
motor protect,on
08 01 100% 17
Ii . increase 09 06
—
meditzii 18
. lJ/f characterstic
(U/f ecge point + f~~)
10 00 0-50Hz 19
chopper freq~ency 11 05 mediun 19
f Limit with offset 12 00 50Hz 20
1 . increase with offset 13 00 0Hz 20
f . (bias> 14 00 0Hz 21
MaximJn freq~ency
imitation
15 00 trnntation
at 150 Hz
01 without limit
00
150 Hz 21
be
in
16 3 frequency vatues to
exctuded äiring accete-
ration and deceLerat>on
order to avoid resonences
T7~o~~iF
externat FiJ~~ticu7~
internEEtroLl
overcu‘rent warning 20
input in Hz
00
00
00
with
out 22
17
18
19
00
00
externai.
Umin
controt
22/23 01
02
03
01 110% 23
freq.~ency merker 21 input in Hz 50 50 Hz 24
inverter signal at f. 22 00 0.5Hz 24
idling at < 2 Hz 23 00 02
g~ak¶n 24 brake chopper operation 01
DC braking at
f <2 Hz
02
starting current Limit 24 01 141% 25
Int./Ext. externet.
set-vatue internat 25 01 01
externat. 26
OD
U/f ecge paint at
characteristic 18
26
pu in Hz
50 50Hz 26
optioraL functions 27 00 26
autoii~tic TRiP reset after
mains ur~ervoLteoe
28 00 27
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7.3 Description of the tiinction code
Function code 00
The display can be prograznined after mains switch—on mains using
thls function code.
Data code
00: Display ot the rotational fieid frequency
01: Display of the motor current (R.~4.S.).
By pressing the SHIFT-key, either frequency or current display can ~e
selected during operation.
Functiori code 01, 02, 03
The inverter is set to one of the three prograininable rotational
tield frequencies, by olosing the switches S3 and/or S4. As soon
as S3 and/or S4 are closed, any other set—value setting is
made inactive.
S3 54 trequency setting
[Hz] using
function code
tactory
setting
closed
open
closed
open
closed
closed
01
02
03
10 Hz
20 Hz
30 Hz
Function code 04
The inverter is set to a fourth, programined rotational ffield
frequency by closing switch S5. As soon as S5 is closed,
any other set-value setting, as well as switches 53 and S4 are
inactive. The frequency is set in Hz. (Factory setting is 5 Hz).
Note:
At maximum ffrequencies higher than 50 or 60Hz, the rotational
field treguencies which are set usirig tunction codes 01, 02,
03 and 04 are multiplied according to the maximum freguencies.
:Orexample -
Maximum frequency: 150Hz
(Function code 10 data code 04)
Prograxnined flxed fregency: 20:~iz
(Function code 01, 02, 03 or 04: data code 20)
Actual fixed ffreguency: 60Hz
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Furction code 051 06 and 07
The tirst acceleration and deceleraticn tiiue, as well as the second
cominon acceleration and deceleration tue are coded according to the
tollowing table:
lt the switch SG is opened, the first acceleration and deceleration
times apply. lt S6 is then clcsed, the second coiamon acceleration and
deceleration tue becomes eftective.
At maximum trequencies higher than 50 or 60 Hz, the acceleration and
deceleration times listed above and the programmable fixed ffreguencies
are multiplied.
Factory setting:
- first acceleration tue 7.5s
— first deceleration time lOs
— second conunori time 20s

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Function code 08
When using this tunction code a built—in electronic motor protec—
tive tunction can be adapted to smaller motors, which are not
dimensioned tor the inverter size. The protective ttinction is
only valid tor tour-pole motors and cannot be used tor group
drives. The data code to be set can be tound in the tollowing
table.
Date cc~de 00 01 1 02 03 0-4 05 06 07 08 09 101 11 1 12 13 14 151
not 100 95 90 85 80 75 70 65 60 55150145 40 35 30
c
0>
E
0
0
1.~
50
40
30
20
10
The protective tunction considers the reduced motor cooling at
lower treguenoles (speeds). The characterlstic shows the operation
at nominal trequency. Lower trequencies result in shorter
switch-ott times. When the protective tunction is released, 0L2
appears as the tault condition.
30 100 150 {O/)
inveder current

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Function code 09
At voltage-treguency (U/t) edge points ot 50 Hz or 60 Hz,
16 different U . characteristics can be entered. Using character -
istlcs 0 and lni~i~e motor is underexcited, whilst characteristics 2
through to 15 allcw tor a voltage increase in the lowerspeed range
with linear voltage-trequency increase.
Umains
lt the U/t edge pointis hlgher than 60 Hz, an underexcitement
of the motor is no langer possible. Then, all characteristics
(0 to 15) have a linear voltage—trequency increase.
00: minimum Umin increase
06: normal Umin increase
15: maximum Umin lncrease
50 or

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Functlon code 10
The following U/t characteristics can be programxned:
QO 01 1 02 03
5
5
50Hz
6
66
60Hz
1
11
I
‚ 1
1 1
50Hz T2~—~z
~
~
~
~
~*-~ ~2Vt—tz
05 06 07
~~
~
~
~ 0Hz
11
50Hz 3ZOHz
1
11 1
1 1
eo ‚1S~Hz
~
~7L
1
1
10 1 ~•
1
1
1 1
60Hz 360Hz
1
11
100Hz
1
1
120Hz
12 12 15
‚
‚
‚
‚i5OHz
1
111
180Hz
.
.1
11
2001-tz
2
22
2~.0Hz
1
11
5
11
~
~i7L
330Hz3EO-~z S0Hz93H2~Hz
16 17
18
lt the maximum treguency ot the chosen characterlstic is a
multiple ot 50 Hz orGO Hz,the acceleration arid deceleration
tiioes as well as the fixedtrequenciesot tiinction code 01, 02,
03, 04 and the „SAR“ output si~Tial, are multiplied accordingly.
The U/ff edge point can be treely selected between 50 Hz and 99 Hz
using tunction code 26, when choosing the last characteristic
via data code 18.
Funotion code 11
The chopper trequency can be set to 10 ditterent values in
order to avoid machine resonances.
foctc~y seting
dato code 5
00 09 dotc code
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