Nor-Cal SDC15 Controller - 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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