Instruction manual

The advantages of VPFW SSR over conventional SSR are summarized as
following table:
The advantages of VPFW SSR over conventional SSR are summarized as
following
table:
Functions
VPFW SSR
VPFW SSR Conventional SSRConventional SSR
Zero Cross SwitchingZero Cross Switching
Yes Yes
Time Base
Time Base Variable Fixed
Proportional Timing Error
Proportional Timing Error
Control AchievementControl Achievement
Half on CyclesHalf on Cycles
DC Load CurrentDC Load Current
Harmonic CurrentHarmonic Current
Stress on the LoadStress on the Load
Load ( Heater ) LifeLoad ( Heater ) Life
Even
Zero
0.1%
0.1%
Excellent
Low
Low
Longer
1% ( for 1 sec.
cycle time )
1% ( for 1 sec.
cycle
time )
Good
Even and Odd
Even and Odd
Nonzero
Higher
Higher
Shorter
Table 5.1Table 5.1
Function Comparison between
Conventional SSR and VPFW SSR
Function Comparison between
Conventional
SSR and VPFW SSR
The output 1 and output 2 of ETR-3400 can be connected to VPFW SSR
directly provided that a pulsed voltage drive output (ETR-3400-XX2XXX or
ETR-3400-XXX2XX) is ordered.
The output 1 and output 2 of ETR-3400 can be connected to VPFW SSR
directly provided that a pulsed voltage drive output (ETR-3400-XX2XXX or
ETR-3400-XXX2XX) is ordered.
Here is an example:Here is an example:
ETR-3400-XX22XX
OUT1=REVR
O1TY=SSRD
CYC1=1.0 (sec)
OUT2=COOL
O2TY=SSRD
CYC2=1.0 (SEC)
OUT1=REVR
O1TY=SSRD
CYC1=1.0
(sec)
OUT2=COOL
O2TY=SSRD
CYC2=1.0
(SEC)
Figure 5.4Figure 5.4
VPFW SSR Application ExampleVPFW SSR Application Example
+
+
_ _
VPFW SSRVPFW SSR
AC PowerAC Power
Three phase VPFW SSR's are also available upon request.Three phase VPFW SSR's are also available upon request.
O1
O2
A1
F
ETR-3400