High Voltage Control Unit Typ HST 01/01 - SCHNIER Elektrostatik ...

Operating Manual
High Voltage Control Unit
Typ HST 01/01

Operating Manual
Inhaltsverzeichnis
1.0 General Information
2.0 Safety
3.0 Technical-
Data
4.0 Design
Description
5.0 Functional
Description
6.0 Busmodule
7.0 Spare Parts and
After Sales Servicet
1.1 Introduction
1.2 Scope of Application
2.1 Labor Protection Symbol
2.2 Warning Label
2.3 General Safety Notes
2.4 Special Safety Notes
3.1 General Notes
3.2 Supply Voltages
3.3 Setting Values
3.4 Inputs
3.5 Outputs
4.1 Subassemblies
4.2 General Notes
4.3 Panel Overview
4.4 Indicating Instruments
4.5 Control LED´s
4.6 Switches
4.7 Trim Potentiometers
4.8 Control Unit Mounting
5.1 Constant Voltage Operation
5.2 Constant Current Operation
6.1 Overview
6.2 Mains Supply
6.3 HV Generator Connection
6.4 External Supplies
6.5 Inputs and Outputs
6.6 Earth reversing switch connections
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Operating Manual
1.0 General Information
1.1 Introduction
1.2 Scope of Application
This Operating Manual (in the following called OM) has to be read,
fully understood and observed in all respects by all persons who
are responsible for the devices and the electrostatic installation.
For these reasons the OM should always be available to the
operating, maintenance and service personal.
Only with the knowledge of this OM faults can be avoided and a
trouble-free operation be guarenteed. Therefore it is important
that the OM is known to all persons involved. The company
SCHNIER Elektrostatik GmbH will not assume any responsibility
resulting from the failure to comply with the OM!
The HV control unit may only be used in electrostatic coating
installations within the temperature range of 10°C to 40°C and a
relative humidity of between 35% to 80%. Furthermore the relevant
safety notes according to points 2.3 and 2.4 of this OM
must be strictly observed.
The HV control unit HS 01/01 has to be only operated with the
high voltage generators of the medium frequency types supplied.
by the company SCHNIER Elektrostatik GmbH.
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2.0 Safety
Operating Manual
2.1 Labor Protection Symbol
2.2 Warning Label
2.3 Special Safety Notes
2.4 General Safety Notes
This symbol marks all notes which might lead to danger for life
and limb of persons if they are not observed. Please observe
them and be especially careful in these cases.
Apart from the notes in this OM the general valid safety instructions
as well as the regulation for the prevention of accidents must be
adhered to.
Attention!
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This attention label will be displayed in this OM whenever there is
an important note to be observed in order to avoid damage or
destruction of the device.
The HV control unit may only be used for stationary spraying
installations which fulfill the relevant safety requirements.
The safety notes under point 2.4 are To be observed most stringently,
especially:
EN 50 176
EN 50 177
EN 50 223
EN 50 348
DIN VDE 0147 SEC. 1
Moreover, the operating instruction of the resp. electrostatic
plant has to be observed!
See data sheet “Vorschriften und Regeln” no. 810002DD01.

3.0 Technical Data
3.1 General Notes
3.2 Supply voltages
3.3 Setting Values
Operating Manual
Device designation HV control unit
Model HST 01/01
Dimensions H/W/L 3 HE/42 TE / 232,5mm
Serial number see label
Year of construction see label
The control unit can be powered in the following two ways:
a) Internal supply module
SEVM 101
connection via X1
b) External power
supplies
connection via X3
230 V / 50-60 Hz 150VA
36 V AC + 10% /
50- 60 Hz 120 VA
24 V DC + 10 %/20VA
The following setting values depend on the employed HV generator
a) Constant voltage operation
Static current
disconnection treshold :
High voltage: 0- >100 kV, stepless
adjustment
Dynamic current
disconnection (di/dt): 0- >980 µA/s
High voltage ramp rate: approx. 3s (fixed)
b)Constant current operation
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Current limitation: 0- >800 µA, stepless
adjustment
Voltage limitation: 0- >100 kV, stepless
adjustment
Dynamic voltage
disconnection (du/dt) 0- >100 kV/s
Static voltage
disconnection treshold 36 kV (fixed)
High voltage ramp rate approx. 3s (fixed)

Operating Manual
3.4 Inputs HV on 24 V DC
Stage 1 24 V DC
Stage 2 24 V DC
Stage 3 24 V DC
Stage 4 24 V DC
Stage 5 ( analog ) 24 V DC
I or U operation 24 V DC
3.5 Outputs
Analog outputs for
instruments
Inputs for analog setting of nominal value
U nom
0 ... 10 V DC equals
0 ... 100 kV
I 0 ... 10 V DC equals
nom
0 ... 1 mA
du or di / dt 0 ... 10 V DC equals
0 ... 100 kV/s
or 0 ... 1mA /s
Fault: 24V DC max 100mA
Release: 24V DC max 100mA
Pre-warning: 24V DC max 100mA
HV on 24V DC max 100mA
Earth reversing switch 24V DC max 100 mA,
adjustable disconnection
delay between 0,1and 5s
U act
I act
0 ... 10 VDC equals
0 ... 100kV
(Ri>100kOhm)
0 ... 10 VDC equals
0 ... 1mA
(Ri >100kOhm)
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Operating Manual
4.0 Design Description
4.1 Subassemblies
4.2 General Notes
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The HV control unit HST 01/01 consists of the following
components:
-Control module SESM 101
-Power module SELM 101
-Front module SEFM 101
-Bus module SEBM 102
-External supply module SEVM 101 (optional)
The high voltage control unit HST 01/01 is designed for the operation
of HV generators ot the medium frequency types.
According to the selected operation mode (I constant or U constant)
the voltage or the current can be defined in 5 stages and can be
adjusted between 0 and 100% of U nom. or I nom.
For each stage there is a static and a dynamic dis-connection
treshold (for more details see 4.4 and 4.5).

4.3 Übersichtsbild
General
Operating Manual
4
3
2
1
1 Fixing screw
2 Handle bar
Adjustment potentiometers
14 kV adjust stage 1
15 µA adjust stage 1
16 Dynamic adjust stage 1
17 kV adjust stage 2
18 Dynamic adjust stage 2
19 µA adjust stage 2
20 kV adjust stage 3
21 Dynamic adjust stage 3
22 µA adjust stage 3
23 Dynamic adjust stage 4
24 kV adjust stage 4
25 µA adjust stage 4
5 6 7 8 9 10 11 12 13 14 15
28 27 26 25
Visual displays and LED's
3 Display for µA and fordynamic disconnection
4 Display for kV
5 LED for release signal
6 LED for power on
7 LED for warning
8 LED for static disconnection (U or I)
9 LED for dynamic disconnection (U or I)
10 LED for constant current mode
11 LED for constant voltage mode
Switches
16
17
18
19
20
21
22
23
24
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12 HV on
13 Set point selection switch
26 Selection of µA or Dyn.
27 Selection of actual or nominal value
28 Selection of current or voltage mode
(only analog step)

4.4 Indicating
Instruments
4.5 Control LED's
1. Power on LED (6)
2.Release LED (5)
3.Warning LED (7)
4.U/I static LED (8)
5.U/I dynamic LED (9)
Operating Manual
6.Current mode LED (10)
7.Voltage mode LED (11)
4.6 Switches
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In the HV control unit HST 01/01, there are two digital instruments.
The top digital display (4) is for the kV. Dependent on the position
of the Nominal/Actual Value Switch (27) it indicates the exact
nominal or actual value of the output voltage.
The lower digital display (3) is for µA (3). It also indicates the
exact nominal or actual value of the output current, dependent on
the position of the Nominal/Actual Value Switch (27). In addition
the actual values can also externally be evaluated or displayed
via the bus module (for more details see Technical Data, page
11).
With the selection switch (26) in the Dyn. position, the dynamic
disconnection value can be displayed. In this case the nominal
value is indicated in any of the two positions of the selection switch
(27) for nominal or actual value.
The HV control unit HST 01/01 has seven control LED's which
are as follows:
This LED is on when the internal power supply is functioning
correctly.
This LED is on when 80% of U or I is achieved
nom nom
This LED is on when 80% of the adjusted static disconnection
treshold is reached
This LED is on after triggering of the static current or voltage
disconnection treshold.
This LED is on after triggering of the dynamic current or voltage
disconnection treshold.
This LED is on when the selected stage is in current mode.
This LED is on when the selected stage is in voltage mode.
The HV control unit HST 01/01 has five function switches on
the front plate.
The switches (26) for µA or Dyn. and (27) for nominal or actual
value are only used for the digital displays as described in 4.4.
The HV on switch (12) serves as master switch.

Operating Manual
Attention!
4.7 Trim Potentiometers
Attention!
fig.1
On the front plate of the HV control unit high voltage cannot be
activated without an additional external release signal (for
instance key switch or PLC signal). Only with the HV-on switch
(12) in the on position and the external HV-on signal present,
high voltage is generated.
The multiple contact switch (13) is for selection of single stages.
The HV control unit has 5 stages. For the stages 1 to 4 the
nominal values for kV, µA and Dyn can be adjusted using the
trim potentiometers located on the unit's front plate. The stage 5
(analog) nominal values for kV, µA and Dyn can be defined
externally using analog voltages (0 ... 10 V DC). Stage 5 cannot
be selected via the multiple contact switch (13), but externally
with the switch (13) in the "External" position.
This works the same way also for the externalselection of the
stages 1 to 4. One of the five stages can only be controlled
externally if the multiple contact switch (13) is in the "External"
position.
As already described in 4.6 the high voltage controller SHST
100/01 has 4 internally adjustable stages (stage 1 to 4) whose
nominal values for kV, µA and Dyn can be adjusted via 12 trim
potentiometers (14 to 25). There are 3 trim potentiometers per
stage for specifying values from 0 to 100 kV or from 0 to 800 µA
or from 0 to 100 kV/s or from 0 to 1000 µA/s.
The following assignment have been made:
Trim potentiometers for stage 1:
(14) for kV, (15) for µA and (16) for Dyn
Trim potentiometers for stage 2:
(17) for kV, (19) for µA and (18) for Dyn
Trim potentiometers for stage 3:
(20) for kV, (22) for µA and (21) for Dyn
Trim potentiometers for stage 4:
(24) for kV, (25) for µA and (23) for Dyn
It is important that the corect trim tool (see fig. 1) is used as
the use of any other tool could cause damage to the trim
potentiometers
1 trim tool is supplied with every control unit .
Nevertheless additional trim tools can be ordered by stating:
article designation: SEAS
reference no.: 150018
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Operating Manual
4.8 Control Unit Mounting
Attention!
5.0 Functional Description
The HV control unit HST 01/01 is equipped with four knurled screws
secured against loss for attaching the control module to the rack.
The control module must be fastened with all fixing screws to the
rack in order to guarantee perfect electrical contact between the
plug-in connectors and the bus plate bar.
After loosening the fixing screws the control module may only be
pulled out of the rack using the handle bar (2). Never pull out the
control module using the switches instead of the handle bar.
The HV control unit HST 01/01 is provided with 5 stages. There
is one trim potentiometer for kV, one for µa and one for Dyn for
each of the stages 1 to 4. By means of the trim potentiometers
nominal values between 0 and 100% cvan be adjusted.
For stage 5 (analog) the nominal values are specified via analog
voltages by the superimposed control system (for more details
refer to Technical Data, page11).
For each stage two operating modes are available:
a) constant voltage (U-mode)
b) constant current (I-mode).
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For stages 1 to 4 switching over of the operating modes can only
be carried out internally on the control board SESM 101 (see
fig.)
For stage 5 (analog) the change-over may be realized either via
the front plate or externally. The device will be in I-mode after
having selected I-mode from the front plate or externally.

Operating Manual
Attention!
Stage 4
U I
< >
Stage 3
U I
< >
Stage 2
U I
< >
Stage 1
U I
< >
5.1 Constant
Voltage Mode
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Only authorised personnel should be allowed to execute the
operation of switching over on the control board as this requires
the opening of the control unit.
In the constant voltage mode the voltage is increased to the
adjusted nominal value and held constant. When reaching approx.
80% of the desired output voltage the "release" signal is output.
When there is load on the HV output, the output voltage is kept
constant, but only within the power range of the connected HV
generator (see characteristic curve of the HV generator).

5.2 Constant
Current Mode
Operating Manual
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In the constant voltage mode the static current disconnection
treshold can be adjusted between 0 and approx. 820 µA. When
reaching approx. 80% of the adjusted disconnection treshold the
"warning" signal is generated. As soon as the load decreases,
the signal disappears. If the load nevertheless increases the
controller indicates "fault" when the adjusted treshold value is
reached. High voltage then will automatically be switched off. In
order to switch the high voltage on again, the "HV on" signal has
to be surpressed during at least one second either by (12) on the
front plate or by means of the external control system.
The dynamic di/dt disconnection treshold can be adjusted
between 0 and approx. 999 µA/s. This part of the controller
continuously monitors in which time a determined current value
is reached, either during current rise or fall (current slope
steepness). If the current slope is steeper than permitted by the
adjusted value, the controller will indicate "fault". The fault reset
procedure is the same as for static disconnection. The dynamic
disconnection is independent of the static disconnection treshold.
This means that a dynamic disconnection may also be triggered
if the current is significantly below the static disconnection value.
On the front plate of the HV control unit the type of disconnection,
either static of dynamic, will be displayed. In addition a collective
fault is output to the external control system.
In constant current mode the operating current can be adjusted.
This value is kept constant by regulating the output voltage. When
reaching approx. 80% of the adjusted current value the "release"
signal is output. By means of the "kV" nominal value the maximum
admissible operating voltage between 40 and 100 kV can be
limited.
In constant current mode the static voltage disconnection treshold
is fixed to approx. 38 kV. When reaching this value the device
switches off and indicates "fault". In order to switch the high voltage
on again, the "HV on" signal has to be surpressed during at least
one second either by the switch (12) on the front plate or by means
of the external control system. Before the controller disconnects
the "warning" signal is generated at appox. 46 kV.

6.0 Bus module
6.1 Overview
Operating Manual
X4
The dynamic du/dt disconnection treshold can be set between 0
and approx. 999 kV/s. This part of the controller continuously
monitors in which time a determined voltage value is achieved,
either during voltage rise or fall (voltage slope steepness). If the
voltage slope is steeper than permitted by the adjustable value
the controller will indicate "fault". The dynamic disconnection is
independent of the static disconnection treshold. This means that
a dynamic disconnection may also be triggered if the voltage is
significantly above the static disconnection value.
On the front plate of the HV control unit the type of disconnection,
either static of dynamic, will be displayed. In addition a collective
fault is output to the external control system.
P1
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X1
X5
X2
X3

6.2 Main supply
6.3 HV Cascade
Connection
Operating Manual
The power is supplied to connector X1 and is only required with
integrated supply module SEVM 101 and is therefore not necessary
in case of external power supply via connector X3.
Pin Designation Signal Function
01 L1 230V 150VA 50Hz supply voltage
02 N 230V 150VA 50Hz supply voltage
<
03 PE PE
6.4 External Supplies
The HV cascade is connected via connector X2.
Pin Designation Signal Function
01 R+ 0-36V DC 120 VA supply
02 PEGND 0 ground
03 E+ 17V DC 10VA auxiliary voltage
04 I-Ist 0-10V DC current actual value
05 U-Ist 0-10V DC voltage actual value
Attention!
The external power supply is realized via connector X3 and will
only be required without a supply module integrated, for instance
if various controllers are supplied by a single power supply.
<
<
<
Pin 02 (GND) must be connected to ground.
Pin 03 or 04 (36VAC) must not be grounded.
Pin Designation Signal Function
01 24V DC 24V DC 20 VA Steuerspannung
02 GND 0 Masse
03 36V AC2 36V 120VA 50Hz Versorgung HS-Erzeuger
04 36V AC1 36V 120VA 50Hz Versorgung HS-Erzeuger
<

6.4 Inputs and Outputs
6.6 Earth Reversing
Switch Connector X5
Operating Manual
Via connector X4 different inputs and outputs are available.
Pin Bezeichnung Signal Funktion
01 PEGND 0 Ground
02 U-Ist-Ext 0-10V DC 0,1mA Actual value output
03 I-Ist-Ext 0-10V DC 0,1mA Actual value output
04 HV-On 24V DC 100mA Output
05 Fault 24V DC 100mA Output
06 Relase 24V DC 100mA Output
07 Warning 24V DC 100mA Output
08 DX/DT 0-10V DC Analog nom. value input Dyn.
09 U-Nom. 0-10V DC Analog nom. value input voltage
10 I-Nom. 0-10V DC Analog nom. value input current
11 HV-On 24V DC Control signal HV on
12
13
14
15
16
17
Stage 1
Stage 2
Stage 3
Stage 4
Analog Stage
I-Mode
24V DC
24V DC
24V DC
24V DC
24V DC
24V DC
<

Operating Manual
Pin Designation Signal Function
01 ES 24V DC 100mA Triggering of earth reversing switch
02 GND 0 Ground
03 24V DC 24V DC Supply for feedback signal
04 Feedback. 24V DC Feedback from earth revers. switch
Spare parts and
Service
No guarantee whatsoever is valid, if no original parts are used!
Our address:
<
Schnier Elektrostatik GmbH
Robert-Bosch-Straße 60
72810 Gomaringen, Germany
Tel.: +49 (0) 70 72 / 91 43 -0
Fax: +49 (0) 70 72 / 91 43 -20
<
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