Input Unit - Panasonic S-LINK V User Manual

Connection of DC 2-Wire Output Device to Input Unit
CAUTION
If you have to connect a DC 2-wire output device to an input unit, recommend our product.
If a product manufactured by another company is used, the conditions should be checked by follow-
ing the procedure shown in the following flowchart.
This is because the output device of another company does not fit our input unit.
DC 2-wire output device should be
used
Our product is used
NO
Check 1
21.6V-V ≥ V and
THON A
21.6V-V =In specified op-
THOFF
eration voltage range
YES
Check 2
21.6V-V
A
≥ Minimum load current
R
i
YES
Condition A
Check 3
V
THOFF
≥ A (Leakage current
1
R
i in OFF mode)
YES
Decision of condition
Condition A
Connection is possible without any
bleeder resistor
26
YES
Normal connection
NO
Connection to the S-LINK V system
is not possible
NO
The bleeder resistance is necessary
Calulation of bleeder resistance
21.6V-V
R ≤
B1
Minimum load current-
Condition B
NO
Calulation of bleeder resistance
V
THOFF
R ≤
B2
V
THOFF
A -
1
R
Decision of condition
Condition A
Connection is possible if the R
bleeder resistor is attached
Condition B
Connection is possible if the R
bleeder resistor is attached
V
A
A
1
V
TH
V
THON
V
THOFF
R
i
R
B
A
21.6V-V
A
R
i
i
Condition B
Connection is possible if the R
B2
(small value) bleeder resistor is attached
B1
: Residual voltage in ON mode
: Leakage current
: Input voltage of input unit
: Input unit ON voltage
: Input unit OFF voltage
: Input impedance
: Bleeder resistance
or R
B1 B2