Operating instructions

OI: BK MIKRO LIN.B System Components
Rev. 2.02 dated 31.05.2007 Page 7 of 30
2.1.2 Connection terminals
Power supply
"24 VDC" model:
+
Supply voltage input 24 VDC
–
Reference potential of 24 VDC supply voltage
"120 VAC" and "230 VAC" models
2)
:
L1
Supply voltage input,
depending on model: 120 VAC or 230 VAC
N
Supply voltage input,
depending on model: 120 VAC or 230 VAC
+
Control voltage for "Start", "Teach" and S1, S2, S3 controlling inputs:
24 VDC unregulated, output current 0.1 A max.
If an ext. control voltage is applied, this terminal is not connected.
–
When using the internal control voltage, this terminal must be
connected to the "Com" control inputs terminal.
If an ext. control voltage is applied, this terminal is not connected.
See section "Control voltage connection" in chapter "Installation Notes".
Note:
2)
Alternatively, "120 VAC" and "230 VAC" models may also be supplied
with 24 VDC.
In this case, "L1" and "N" terminals must not be connected.
"+24 VDC" and "-24 VDC" terminals are to be connected as described above
for "24 VDC" model (see chapter "Installation Notes").
Caution
Note:
The secondary voltage (24 V) of the 120/230 V Versions can be used to supply
the control inputs. It is not allowed to supply other accessories which are located
outside the overall enclosure.
Control inputs
Com
Reference potential for control inputs and selection inputs
"Multi"
Start
An input level of +24 VDC relative to "Com" terminal will trigger a
"Start" cycle (the real scanning process).
"Single"
Teach
A
n input level of +24 VDC relative to "Com" terminal will trigger a learn
cycle (the "Teach-in").
Note: This terminal is marked "Lern" at the "Single" unit.
In the following it will be designated also "Teach".
+
–
24 V DC
L1 N
AC IN
+
–
24 V DC
Com
Start
Teach
Com
Start
Lern