Nor-Cal SDC15 Controller User Manual
Page 47
4-9
Chapter 4. WIRING
●
Resistor type (Yamatake's PGM, etc.)
When necessary, an appropriate external resistor is connected in series so that the
voltage between the input terminals of the SSR you are using is within the
specified range.
(Example) Connection of two Yamatake PGM units
Connection diagram
V: 19V
± 15%
R0: 82Ω ± 0.5%
R1: 680 Ω
R2: 260 Ω
Vf: 1.1V
Voltage between terminals of PGM = (V - 2 X Vf) / (R0 + R1+ R2 + R2) X R2 + Vf
4.5 V
Input voltage range of PGM: Since the input voltage range is 3 to 6V, the
operation is possible.
External resistors
Number of connectable units
(Note) 4 units for each output
C15
V
R0
PGM
R2
Vf
3
4
PGM
R2
Vf
3
4
External resistor R1
+
-
SSR to be used
Connection
V0/VC model
VV model
Yamatake PGM
Serial connection
Up to 4 units
Up to 8 units (Note)
SSR to be Number of units
Connection
External
Remarks
used
to be connected
resistor
Yamatake
1
–
1k
Ω
(serial connection)
Rating is 1/2W or more.
PGM
2
Serial connection 680
Ω
(serial connection)
Rating is 1/2W or more.
3
Serial connection 330
Ω
(serial connection)
Rating is 1/2W or more.
4
Serial connection
None
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