CSM_G32A-EA_DS_E_7_1
1
Cycle Control Units
G32A-EA
Refer to Safety Precautions for All Power Controllers.
Used in Combination with the G3PA to
Enable High-precision Temperature Control
• Use cycle control to achieve power control with little noise.
• Used in combination with the G3PA to connect to single- and
three-phase loads.
• Three types of input method available: Internal adjuster,
external adjuster, or DC signals from 4 to 20 mA.
• Streamline design. Both DIN track mounting and screw
mounting possible.
• Use linking terminals for close mounting of the G3PA.
• Built-in isolation transformer.
• Power supply range: 100 to 240 V.
For the most recent information on models that have been certified for
safety standards, refer to your OMRON website.
Model Number Structure
■Model Number Legend
1. Basic Model Type
G32A: Accessory for G3PA
2. Basic Model Name
EA: Cycle Control Unit
3. Certification
US: Certified by UL and CSA
Ordering Information
■List of Models
■Accessories (Order Separately)
External Variable Resistor
123
G32A-EA-US
Name Isolation transformer Rated power supply voltage Model
Cycle Control Unit Yes 100 to 240 VAC G32A-EA-US
Model
G32A-E-VR
G32A-EA
2
Specifications
■Ratings (at an Ambient Temperature of 25°C)
■Characteristics
Engineering Data
Output Cycle Rate vs. Setting Value Output Cycle Rate vs. Control Current
Rated power
supply current
50 Hz 100 to 240 VAC 40 mA max.
60 Hz 100 to 240 VAC
Output signal 20 mA max. at 12 VDC ±15% (at 25°C)
Input signal Current signal: 4 to 20 mA (input impedance: 352 Ω)
Internal adjuster: 50 kΩ (1/4 W)
External adjuster: 50 kΩ (1/4 W)
Output cycle rate 0 to 100%
Control cycle 0.2 s
Number of operable Units 3 G3PA-VD Relays max.
Power supply voltage range 75 to 264 VAC
Dielectric strength 1,500 VAC, 50/60 Hz for 1 minute (between AC power supply and input/output terminals)
Insulation resistance 100 MΩ max. (at 500 VDC)
Vibration resistance 10 to 55 to 10 Hz, 0.375-mm single amplitude (when mounted to DIN track)
Shock resistance 300 m/s2 (approx. 30 G)
Storage temperature –30 to 100°C (with no icing or condensation)
Ambient temperature –30 to 80°C (with no icing or condensation)
Ambient humidity 45% to 85%
Weight Approx. 100 g
Output cycle rate (%)
Output cycle rate (%)
Setting valueControl current
G32A-EA
3
Nomenclature
The following diagram shows the terminals, adjusters, and switches on the G32A-EA.
Setting the Input Method
Select external adjuster, internal adjuster, or control current as the
input method using the selection switches as shown in the following
table.
Note: 1. The input selection slide switches are factory-set to internal
adjuster input. Change the setting of the switches for the
input method required.
2. When using the internal adjuster, use with the input
terminals (C1, C2) in the open state. Internal setting is not
possible if there is a Temperature Controller or other device
connected to C1 or C2.
−
−
+
+
Input terminal C2
Input terminal C1
Output terminal (B1)
Input selection slide switches
Internal adjuster
Output terminal (B2)
AC power supply terminal (A1)
AC power supply terminal (A2)
Control method Input selection slide switches
External adjuster
Internal adjuster
(See note 2.)
Control current
4 to 20 mA
4 to 20 mA
4 to 20 mA
G32A-EA
4
■Cycle Control Setting Method
The output cycle rate can be adjusted using the internal or external adjuster.
For current control, refer to the Output Cycle Rate vs. Control Current graph on page 2.
Note: When using the internal adjuster or external adjuster, it is necessary to set the input control method in the way described previously.
Note: The resistance is 50 kΩ at 100% and 0 Ω at 0%.
■Output Power Resolution
When power is controlled using the Cycle Control Unit, the output
resolution (minimum variation value) depends on the half cycle of the
power supply frequency and the time depends on the power supply
frequency. (SSR with zero cross function)
■Cycle Control Method
The power on the load side can be controlled by adjusting the
number of cycles within the control cycle of 0.2 s and repeating this
control cycle.
VR setting Output cycle rate (%)
Control cycle: 0.2 s
Control cycle Output power resolution
50 Hz 60 Hz
0.2 s 5% (10 ms) 4.2% (8.3 ms)
Control cycle: 0.2 s
50 Hz: 5% (10 ms)
60 Hz: 4.2% (8.3 ms)
Control cycle: 0.2 s
Electric furnace temperature
G32A-EA
Current control input
G32A-EA
Output signal
20 mA
12 mA
4 mA
G32A-EA
5
Operation
■Application Examples
High-precision temperature control can be achieved in combination with the G3PA.
1. Control Using Current Input
2. Control Using External Adjuster
3. Control Using Internal Adjuster
Applications 1, 2, and 3 each use a different type of input method
and so it is necessary to change the settings of the input selection
slide switches. Be sure to change the slide switch settings in
accordance with the input method on page 3.
Note: 1. For details of input selection slide switch settings, refer to
Setting the Input Method.
2. The above examples are for when a G3PA-VD (except
60-A models) is used at 200 VAC.
3. When performing ON/OFF control for example 2 or 3, do not
connect output terminals B1 and B2 on the G32A-EA to
input terminals A1 and A2 of the SSR as linking terminals,
Rather, connect contacts between these terminals for
switching.
The current flow is 20 mA max. at 12 VDC.
3 Relays max.
Internal adjuster G32A-EA
Current signal DC,
4 to 20 mA
G32A-E-VR
External Adjuster
G3PA-VD
10 to 60 A
NFB
A1
A2
G3PA
G3PA
G32A-D
G32A-EA
Hard-wired heaters
Current output
Temperature Controller
NFB
A1
A2
G3PA
G3PA
G32A-D
G32A-EA
External resistance
Hard-wired heaters
A1
A2
G3PA
G3PA
G32A-D
G32A-EA
NFB
Hard-wired heaters
G32A-EA
6
■External Adjuster
G32A-E-VR
1
M9P 0.75
1±
0.2
1.6±
0.2
20
9.5±
0.5
10±
1
7.5±
0.4
7.5±
0.4
The external adjuster, its adjuster knob, and its nameplate, all come in a set (G32A-E-VR).
External Adjuster
(50 kΩ, B Characteristic)
Knob
Nameplate
Mounting Holes
Less than 3 m
20±
1
dia.
M9P 0.75
6 dia.
-0.1
0
3 dia.
9.5 dia.
44 dia.
20 max.
1.5 min.
20 min.
Note: When using the external adjuster for input, be sure
to set the input selection slide switches accordingly.
Note: Wire the external adjuster at a
distance of less than 3 m.
When wiring, connect in
the way shown below.
Filled with
white resin
2.8±
0.2
dia.
G32A-EA
7
Dimensions
Note: All units are in millimeters unless otherwise indicated.
Safety Precautions
Refer to Safety Precautions for All Power Controllers.
G32A-EA-US
64
8.6
23.7
90±0.3 80
4.5
90±0.3
3.5
4.6×5.6 elliptic hole
Mounting Holes
Two, 4.5-dia. or M4 holes
Cycle control
Without Terminal Cover With Terminal Cover
Six, M3.5 terminal screws
20 max.
100 max.
100 max.
Linking terminal +B1
Linking terminal −B2
Selection
switch
Internal
adjuster
Terminal Arrangement/
Internal Connection
In the interest of product improvement, specifications are subject to change without notice.
ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.
To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.
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2014.4
In the interest of product improvement, specifications are subject to change without notice.
OMRON Corporation
Industrial Automation Company
http://www.ia.omron.com/
(c)Copyright OMRON Corporation 2014 All Right Reserved.
