Technical data

18 / 60 HBC-series V7 LV small types profi low power
Control signal – correct limits and emergency conditions
Controller monitors presence of driving signal continuously (input PWM, voltage range, potentiometer connections, data transfer). When find
not correct driving signal range, absence of driving signal, potentiometer defect etc., activates emergency stop regime, with parameters
P38 (Masking time for signal lost) and P39 (Brake intensity for signal lost), which defines all the emergency stop process.
Detail description follows.
Control by Potentiometer:
Control potentiometer has connect resistors with low values to both terminals, include “pull-up” resistor connect between brush and sys-
tem voltage +3.3V. These additional components bring potentiometer monitoring – if not cut some of terminals or connection wires, if
brush is not shorting. In all these emergency cases is driving voltage moved to “Restricted area H or L”, i.e. out of correct voltage range
and activates emergency stop routine.
For elimination of components tolerances, between Correct range of driving voltage and Restricted areas tolerance zone (safety zone).
Also in this area is driving signal interpreted as Full throttle forward or backward.
For real “safety zone” function, driving signal is not present in this area (standardly). This realized parameter P13 (tolerance of end posi-
tion). When driving signal reach to these values, is always evaluated as correct Full throttle forward or backward – always is guarantee
that driving signal reach these “end positions” of driving signal with components tolerances.
This protection mechanism decrease partially available range of used AD converter (~ about 10 - 15%, i.e. from 4095 values to ~ 3680 up
to 3480 values). In practice is not decrease controllers resolution (or smooth of driving), but significantly increase system safety. Concrete
values are determined by settings of parameters P6, P8, P13, respectively also P9 and P11 (auxiliary driving channel).
Control by Voltage:
The situation is very similar to the control by voltage from an external generator (voltage source, DAC of superior system, etc..) - con-
nected between the terminal GND and terminal "control signal". An error condition occurring during control voltage drop, during cutting of
wires or during short circuit signal to ground (GND) activates the emergency stop. Also bring a higher voltage than the nominal (i.e. +3.3
V / +5 V / +10 V) internally causes a shift in the prohibited zone (above 3.15V) and activating the emergency stop occurs as in the previ-
ous case. Similarly, the voltage less than 0.15 V is taken as an error condition. Keep in mind that the source of control voltage must be
low impedance (< 1 kΩ).
Note: If necessary, you can "Prohibited areas H and L" suppress (disable) by the parameter P90 and the control range increase to full
range of 0.0 to 3.3 V.
1 kΩ
51 Ω
Uh=+3.15 V
Ud=+0.15 V
0.0 V
+3.3 V
150 mV
150 mV
control voltage
(parameter P6)
(parameter P8)
full throttle forward
STOP ●►
full throttle back◄●►
Uint=+3.15 V
Uint=+0.15 V
0.0 V
+3.3 V
(parameter P6)
(parameter P8)
STOP ◄●►
150 mV
150 mV
full throttle forward
STOP ●►
full throttle back ◄●►
STOP ◄●►
Resistor Rh and Rd value for these potentiometers:
POT=1K: Rh=0 Ω (without resist.) Rd=51 Ω
0 Ω
Rh
Rd
POT=
0 až +3.3V
control voltage
full throttle
forward
full throttle backward
Restricted area H
Real range of
driving voltage
(P13) end position width (tolerance)
End position width (P13)
neutral range / STOP (P7)
One way driving ●►
Bidirectional driving ◄●►
STOP
full throttle forward
STOP width (P7)
Restricted area L
Correct range of
driving voltage
(potentiometer)
STOP
STOP
full throttle
forward
full throttle backward
Restricted area H
Real range of
driving voltage
(P13) end position width (tolerance)
End position width (P13)
neutral range / STOP (P7)
One way driving ●►
Bidirectional driving ◄●►
STOP
full throttle forward
STOP width (P7)
Restricted area L
Correct range of
driving voltage
0 – 100%
STOP
STOP
GND
+3.3V
Regulátor HBC - series
k AD převodníku
47 Ω
47 kΩ
1 µF
47 Ω
*) value of resistor “Rs“ for predefined range:
0.15 ÷ 3.15V: -- (without resistor Rs)
0.16 ÷ 3.3V: 2.2 kΩ
0.24 ÷ 5.0V: 27.4 kΩ or (27K + 390R)
0.48 ÷ 10.0V: 102.0 kΩ or (100K + 2K0)
GND
+3.3V
Regulátor HBC - series
k AD převodníku
47 Ω
Externí rezistor
47kΩ
1 µF
47 Ω
Uint
Rs *)