RTA BSD Series User manual

BSD
SERIES
STEPPING MOTOR DRIVES
1/5
R.T.A. s.r.l. - Via E. Mattei – Fraz. Divisa 27020 Marcignago (PV) – Tel. [phone] - Fax [phone] – http://www.rta.it
© R.T.A. s.r.l. BSD_ME03 – 11/18
WARNING: It is user RESPONSIBILITY to check that this manual refers to product model and
version that will be used.
1. GENERAL CHARACTERISTICS
BSD 02 BSD 02.V BSD 02.S
V
DC
with stabilized supply (+/
-
5%)
(V) from 22 to 50*
V
DC
with unstabilized supply (
+/
-
20%)
(V) from 24 to 45
I
N
P
min
(A)
0.7
I
N
P
max
(A)
2.2
Dimension
s
(mm)
78
×
68
× 2
1
78
×
68
×
15
78
×
68
× 2
7
Operating temperature from + 5°C to + 45°C (see point 7.3)
Tab
le
1
Terms definition in Table 1
•V
DC
Nominal value of DC voltage supply (range) at which the drive can operate.
•I
NP
Nominal phase current (peak value) which flows in each motor winding, measurable with motor turning at low
speed (see Table 2). Automatic current reduction at motor standstill is 50% of value set.
•I
NP
min and max Minimum and maximum value of nominal phase current setting using DIP-SWITCH.
(*) NOTE: Never use any power supply voltage higher than allowed one.
2. LOGIC INPUT AND OUTPUT SIGNALS (AM3 Connector, see Fig. 1, 2, 3, 4 and chap. 7.2)
2- CURRENT OFF INPUT: When this signal is HIGH, the drive is active. When it is LOW, the drive is
inhibited, thus motor current (and so holding torque) is turned to zero.
3- STEP INPUT: Step is performed on HIGH to LOW transition of this signal. Suggested duty-cycle: 50%.
Max. frequency: 60 KHz with square wave signal supplied from a logic output at 5 volt. With duty cycle
different from 50%, STEP signal half period has to be longer than 8 µsec.
4- DIRECTION INPUT: With this signal HIGH motor rotation direction is opposite to the one obtained with
input LOW. This signal has to be valid at least 100 µs before STEP signal and has to stay in this state for
at least 100 µs after last step sent to the drive.
5- DRIVER FAULT OUTPUT: When drive is normally working, this output is SHORTED to GND; when drive
is in no-working state, the output is OPEN. The drive automatically goes in no-working state when some
protection is active and automatically recovers when the protection resets.
1 and 6- INTERNAL GND: The terminals are internally connected between each others and to terminals 10 (the
power supply common), 11 and 16. They can be used to connect the shield of logic signal cable (this is
mandatory or useful depending on type of control system).
SIMPLIFIED INPUT STRUCTURE
INPUT
+V =5V
DC
UP
DW
DRIVE INTERNAL CIRCUIT
Vin nom = 5 Volt
Vin max = 24 Volt
Vin
0
R1
R2
R1 = 10 KOHM
R2 = 3.3 KOHM
C = 220 pF
for STEP input
R1 = 22 KOHM
R2 = 6.8 KOHM
C = 2.2 nF
for DIRECTION input
R1 = 22 KOHM
R2 = 6.8 KOHM
C = 47 nF
for CURRENT OFF
input
SIMPLIFIED OUTPUT STRUCTURE
DRIVE INTERNAL CIRCUIT
GND
OUTPUT
(max 50 Volt - 10 mA)
Vmax = 50 Volt
Imax = 10 mA
Vsat 0.8 Volt
Fig. 1 a
Fig. 1 b

2/5
R.T.A. s.r.l. - Via E. Mattei – Fraz. Divisa 27020 Marcignago (PV) – Tel. [phone] - Fax [phone] – http://www.rta.it
© R.T.A. s.r.l. BSD_ME03 – 11/18
3. POWER INPUTS AND OUTPUTS (AM1, AM2 Connectors; see Fig. 2 and 3)
9 - Power supply positive pole. (+ V
DC nom
).
10 - Power supply negative pole. (- V
DC nom
).
11 - GROUND; connect to Protective Earth terminal (PE).
12 - Motor winding terminal A.
13 - Motor winding terminal A-.
14 - Motor winding terminal B-.
15 - Motor winding terminal B.
16 - Connection point for shield of motor shielded cable.
4. MAIN SETTINGS (Dip switch and jumpers). Main setting must be done by the user at the installation or
replacement time, according to motor type and working condition. Wrong setting could damage drive or motor and
cause a not correct work of the motor.
NOMINAL CURRENT
I
N
P
(A)
LOGIC INPUTS OPERATION MODE
Dip 1 Dip 2
B
SD 0
2
-
B
SD 0
2
.
V
–
BSD 02.S
JUMPERS SETTING
► ON ON 0.7 ►UP PULL-UP
ON OFF 1.1 DW PULL-DOWN
OFF ON 1.6
Tab
le
3
OFF OFF 2.2
Tab
le
2
RISOLUZIONE
Dip 3 Dip 4 PASSI PER GIRO
BSD 02 - BSD 02.V – BSD 02.S
ON ON 3.200
►ON OFF 1.600
OFF ON 800
OFF OFF 400
Tabella 4
►= Default settings.
NOTE: It is suggested to use maximum allowed resolution to reduce acoustic noise and vibrations according with the
specific application.
5. LED DRIVE STATUS:
LED HV green: ON = supply voltage higher than minimum allowed value.
OFF = supply voltage lower than minimum allowed value.
BLINKING = Short circuit or wrong connection at motor output.
6. MOTOR – DRIVE COUPLING
BSD series drives can be used with the following Sanyo Denki stepping motors or similar. In case of need to use
motors with different features, contact R.T.A.
MOTOR CODE CURRENT
SETTING
(A)
MOTOR CODE CURRENT
SETTING
(A)
103-H7823-0740 2.2 103-H5208-0483 1.1
103-H7126-0740 2.2 103-H5210-4240 1.1
103-H7123-0740 2.2 103-547-52500 0.7
103-H7123-5040 2.2
Tab
le
5
In the typical application conditions, for each setting shown in Table 5, the maximum allowed motion duty-cycle is as
follows:
- 100% with 24 VDC
- 50% with 48 VDC
In case of particular needs, please contact R.T.A.
7. APPLICATION NOTES
7.1. Electromagnetc interference.
Drive and all related connections are source of E.M. interference (conducted and radiated). In order to comply
to 2014/30/UE and related standards (EN 61800-3), the installation has to be done in accordance with the
schematics in Fig 2 and the following indications:
•Locate drives, power supply, transformer and related cables inside the same enclosure, which has to be
hermetic to electromagnetic fields.

3/5
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© R.T.A. s.r.l. BSD_ME03 – 11/18
•Interpose a filter (CORCOM mod. 6VDK1) near the main supply entrance.
•Use only shielded cable (outside the enclosure) for connecting motor and drive.
•Connection made to Protective Earth terminal (PE), shown in Fig.2, must be short and have the lowest
possible inductance.
•Use a supply transformer with a metal shield between primary and secondary winding and connect this shield
to PE.
7.2. Input logic signals.
•Rated nominal voltage of external logic: 5 volt ; minimum voltage: 3.5 volt ; maximum voltage: 24 volt
Input low level < 1.0 volt ; Input high level > 2.4 volt
•It’s not allowed to use relay to drive inputs.
7.3. Forced cooling.
According to operating conditions (ambient temperature, current setting, duty-cycle) forced cooling could be
necessary.
7.4. Switching power supply.
It is possible to use a switching power supply instead of a traditional power supply indicated in Fig. 2, provided
that you have a capacitor of at least 1000 µF on the output line of power supply. This capacitor should be
located at a distance not greater than 1 - 2 meter from Vdc input of the drive. The purposes of the capacitor
are:
•To feed the high frequency current pulses required by the drive chopper system.
•To absorb the reverse energy generated by motor during the deceleration phases. In those applications in
which the reverse energy is potentially large (high load inertia and / or high motor speed), it can be necessary
to use a capacitor with a capacitance value much larger than the minimum value indicated above.
NOTICES, HAZARDS AND CAUTIONS
•BSD series drives are BDM (Basic Drive Module), as defined in the EN 61800-3. They are sub-assemblies
without a direct function, foreseen to be integrated in a more complex machine or installation by a professional
assembler, expert in the field of motor drives and in their related problems. Only a professional assembler can
install and put in service this component.
•CE marking: Products here described conform to 2014/35/UE and 2014/30/UE, when correctly installed and
used.
•They are intended to drive stepping motors with two phases, base step angle 1.8 degree and phase inductance
between 1.0 and 12.0 mH. Use with different kind of motor is not allowed.
•Protection degree IP00: use only inside a protective enclosure able to avoid electric shock hazard. Main setting,
connector insertion or extraction has to be done with drive switched off.
•Installation is allowed in local environment with pollution degree N° 2 . Installation in presence of explosive and/or
flammable and/or chemically aggressive and/or electrically conductive gas, vapour or dust and installation near
easily flammable or heat sensitive materials is strictly forbidden.
•Use for safety related functions is forbidden (EN 60204-1); it is also forbidden any application arrangement in
which a drive fault or failure could generate an hazardous condition. It is forbidden to use this material in
application covered from one or more EEC directive before the conformity to those directives has been
confirmed.
•Residual voltages: depending on supply type (assembled by user) and application conditions, a waiting time
greater than 5 seconds after switching off could be necessary.
•Scald hazard: due to the presence of some components operating at high temperature (120°C), wait some
minutes after switching off in order to avoid scalds.
•Driver could generate electromagnetic interference (both radiated and conducted) if instruction about installation
directions are not respected (chap. 7). We remember however that compliance to 2014/30/UE directive has to be
tested on whole machine in normal working condition and in accordance with specific standards covering the
particular application.
•In case of drive failure, dangerous high voltage could appear on logic in / OUT connections. For this reason,
regarding to machine safety, you have to consider that a voltage equal to V
DC
could be present at the I/O in case
of failure.
•Insulation of the drive parts is dimensioned for pollution degree N° 2 and for overvoltage class II. The drive can’t
be connected to the main and it has to be supplied by a power supply equipped with transformer main insulation.

4/5
R.T.A. s.r.l. - Via E. Mattei – Fraz. Divisa 27020 Marcignago (PV) – Tel. [phone] - Fax [phone] – http://www.rta.it
© R.T.A. s.r.l. BSD_ME03 – 11/18
IMPORTANT NOTES
1)C, typical values:
C=10.000 µF with V DC =24 Volt
C=4.700 µF with V DC =48 Volt
2)Transformer power, typically:
50 VA with V DC =24 Volt
100 VA with V DC =48 Volt
depending on:
•Current setting
•Motor model
•Motor speed
•Duty-cycle
3)Fuse F1: time lag with nominal
current according transformer
power.
4)Fuse F2: it’s mandatory the
installation of fast fuse 4A.
5)Rectifier bridge: according
transformer power.
6)Terminals 1, 6, 10, 11 and 16 are
internally interconnected.
7)C capacitor must be near AM2
connector; max cables length =
1 m.
+
6
5
4
3
2
1
PE PE
PE
Fault Out
Step In
Dir. In
C. Off In
C
Fuses
F1
Trasnsformer
220
V AC
V nom
AC
GND
GND
EMI FILTER
F2
F2 FUSE INSTALLATION
IS MANDATORY
Shield
Phase B
Phase B -
Phase A-
Phase A
GROUND
-V nom DC
+V nom DC
P
o
w
e
r
c
o
n
n
e
c
t
o
r
s
(
A
M
1
a
n
d
A
M
2
)
Lo
g
i
c
c
o
n
n
e
c
t
o
r
s
(
A
M
3
)
WARNING. F2 FUSE INSTALLATION IS MANDATORY.
Fig. 2 - Drive external connection scheme for BSD 02, BSD 02.V and BSD 02.S
8)The maximum motor cable length is 20 meters; section according phase current RMS value.
9)Vac nom : from 18 to 32 Vac.
BSD 0
2
9
6
1
.
5
6
8
LED HV
(green)
AM3
AM1
AM2
65.5
UP
DW
ON OFF
External dimensi
o
n
s
a
n
d
c
o
m
p
o
n
e
n
t
s
l
a
y
o
u
t
(
s
e
e
f
r
o
m
components side).
Dimensions in mill
i
m
e
t
e
r
s
.
CONNECTORS FO
R
S
T
A
N
D
A
R
D
V
E
R
S
I
O
N
AM1: AMP MO D
U
1
m
a
l
e
6
p
o
l
e
c
o
n
n
e
c
t
o
r
m od. 280
6
1
1
-
6
AM2: AMP MO D
U
1
m
a
l
e
2
p
o
l
e
c
o
n
n
e
c
t
o
r
m od. 280
6
0
9
-
2
AM3: AMP MO D
U
2
m
a
l
e
6
p
o
l
e
c
o
n
n
e
c
t
o
r
m od. 280
3
7
2
-
1
Fig. 3 a

5/5
R.T.A. s.r.l. - Via E. Mattei – Fraz. Divisa 27020 Marcignago (PV) – Tel. [phone] - Fax [phone] – http://www.rta.it
© R.T.A. s.r.l. BSD_ME03 – 11/18
BSD 0
2
.
V
AM1+AM2
9
LED HV
(green)
AM3
65.5
UP
DW
6
1
.
5
6
8
ON
OFF
External dimensi
o
n
s
a
n
d
c
o
m
p
o
n
e
n
t
s
l
a
y
o
u
t
(
s
e
e
f
r
o
m
components side).
Measures in millim
e
t
e
r
s
.
CONNECTORS FO
R
V
E
R
S
I
O
N
.
V
AM1 + AM2: 8 po
l
e
s
c
r
e
w
-
t
y
p
e
c
o
n
n
e
c
t
o
r
s
t
e
p
3
.
8
1
m
m
AM3: 6 pole scr ew
-
t
y
p
e
c
o
n
n
e
c
t
o
r
s
t
e
p
2
.
5
4
m
m
Fig. 3 b
BSD 0
2
.
S
AM1+AM2
9
LED HV
(green)
AM3
65.5
UP
DW
6
1
.
5
6
8
ON
OFF
External dimensions and components layout (see fro
m
components si de).
Measures in millimeter s.
CONNECTORS FOR VERSION .S
AM1 + AM2: 8 pole solder pin connector step 3.81 mm
AM3: 6 pole solder pin connector step 2.54 mm
Fig. 3 c