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Power Controllers
G3PX
79
Manual Control
Single-phase Models
Two-position Control
Single-phase Models
■
Setting of Base-up Output (G3PX-2
@
0EUN Series)
The base-up output can be adjusted with the base-up adjuster knob. It is also possible to control the base-up output for the full scale of 4 to
20-mA input current by adjusting the duty adjuster. Refer to Engineering Data on page 73 for the base-up characteristics.
■
G3PX-2
@
0EHN Series (Multiple Heater Open Circuit Detection Model)
Setting
1. Use the G32X-CT
@@
HN CT Unit and make sure that the G3PX is
wired correctly.
2. The G3PX initially set is shown in the following illustration.
Make sure that the RUN/SET switch has been set to SET.
Make sure that the DUTY adjuster has been turned clockwise to
the maximum.
3. Adjust the sensitivity.
Turn the ALARM adjuster and set to the position where the OPEN
indicator is lit. Stop turning the ALARM adjuster as soon as the
indicator is lit to complete the setting.
3
2
1
G3PX
1
2
3
4
5
6
7
8
9
10
3
2
1
Load 1
Load 2
DUTY
G32X-V3K or G32X-V2K
External DUTY Adjuster
G32X-V3K External DUTY
Adjuster (3 k
Ω
) for duty
setting
Internal DUTY
adjuster
Note: Delicate duty adjustment is possible with the external or
internal resistor. Use a right DUTY adjuster (2- or 3-k
Ω
type) according to the G3PX model as follows:
G32K-V3K (3 k
Ω
) for EH-series models
G32X-V2K (2 k
Ω
) for EUN-, EHN-, and EC-series models
G3PX
1
2
3
4
5
6
7
8
9
10
RY
Load 1
Load 2
H (High)
L (Low)
G32X-V3K or G32X-V2K
External DUTY Adjuster
Note: 1. A temperature controller with relay output or a single relay can be used with the G3PX
in two-position (high-and low-position) control, in which case the relay contact current is
30 mA at 12 VDC with the External DUTY Adjuster set to 0
Ω
.
2. Use a right DUTY adjuster (2- or 3-k
Ω
type) according to the G3PX model as follows:
G32X-V3K (3 kW) for EH-series models
G32X-V21K (2 kW) for EUN-, EHN-, and EC-series models.