Solid State Relays with Failure Detection Function
G3PC
Detects failures in SSR used for heater
temperature control and simultaneously
outputs alarm signal. This SSR supports the
safe design of heater control systems, and
contributes to maintenance improvements
by the user.
• Main detection items:
SSR short-circuits and SSR open-circuits
• Alarm output possible to NPN/PNP-input devices.
• The failure-detection function is built-in and power is supplied
from the main circuit power supply making wiring simple.
• Slim design (width: 22.5 mm) incorporating a heat sink.
• In addition to screw mounting, DIN track mounting is also
possible.
• Certified by EC, UL, and CSA.
Model Number Structure
■ Model Number Legend
G3PC-@@@-@
123 4 5
1. Basic Model Name
G3PC: SSR with Failure Detection Function
2. Rated Load Power Supply Voltage
2: 100 to 240 VAC
3. Rated Load Current
20: 20 A (carry current)
4. Terminal Type
B: Screw terminals
5. Certification
VD: Certified by UL, CSA, and VDE
Ordering Information
■ List of Models
Insulation method Zero cross function Indicators Rated output load Model number
Phototriac coupler Yes Yes
(See page 64)
Note: When ordering, specify the rated input voltage.
■ Accessories (Order Separately)
Name Dimensions Model number
Mounting Track 50 cm (l) × 7.3 mm (t) PFP-50N
1 m (l) × 7.3 mm (t) PFP-100N
1 m (l) × 16 mm (t) PFP-100N2
20 A, 100 to 240 VAC
(resistive load: AC, Class1)
G3PC-220B-VD
SSR
Solid State Relays with Failure Detection Function G3PC J-59
Specifications
■ Ratings (at an Ambient Temperature of 25°C)
Detection Power Supply
Rated power supply voltage 100 to 240 VAC (50/60 Hz)
Operating voltage range 75 to 264 VAC (50/60 Hz)
Current consumption 15 mA AC max. (at 200 VAC)
Operating Circuit
Input method Voltage input
Rated input voltage 12 to 24 VDC
Operating input voltage
range
Must operate voltage 9.6 VDC max.
Must release voltage 1 VDC min.
Input current 7 mA DC max. (at rated input voltage)
9.6 to 30 VDC
Main Circuit
Rated load voltage 100 to 240 VAC (50/60 Hz)
Operating voltage range 75 to 264 VDC (50/60 Hz)
Rated carry current 20 A (Ta = 40)
Minimum load current 0.1 A
Inrush current resistance (peak value) 220 A (60 Hz, 1 cycle)
Permiss ible (I2t) 260 A2s
Applicable load
(with Class-1 AC resistive load)
4 kW (at 200 VAC)
Alarm Output
Output OFF collector voltage 30 VDC max.
Maximum carry current 0.1 A
Output form Independent NPN open collector
■ Characteristics
Operate time 1/2 of load power source cycle + 1 ms max.
Release time 1/2 of load power source cycle + 1 ms max.
Main circuit Output ON voltage drop 1.6 V rms max.
OFF leakage current 10 mA max. (at 200 VAC)
Alarm output Output ON voltage drop 1.5 V max.
OFF leakage current 0.1 mA max.
Insulation resistance 100 MΩ min. (at 500 VDC)
Dielectric strength 2,500 VAC, 50/60 Hz for 1 min
Vibration resistance Destruction: 10 to 55 to10 Hz, 0.35-mm single amplitude
Shock resistance
Ambient temperature Operating: -20 to 60°C (with no icing or condensation)
Ambient humidity 45% to 85%
Weight Approx. 300 g
Certified standards UL508, CSA22.2 No. 14, EN60947-4-3 (IEC947-4-3); Certified by VDE
EMC Emission EN55011 Group 1 Class B
Destruction: 294 m/s
Storage: -30 to 70°C (with no icing or condensation)
Immunity ESD IEC947-4-3, EN61000-4-2
Immunity Electromagnetic IEC947-4-3, EN61000-4-3
Immunity EFT IEC947-4-3, EN61000-4-4
Immunity Surge transient IEC947-4-3, EN61000-4-5
Immunity RF disturbance IEC947-4-3, EN61000-4-6
Immunity Dips IEC947-4-3, EN61000-4-11
2
4 kV contact discharge
8 kV air discharge
10 V/m (80 MHz to 1 GHz)
2 kV AC power-signal line
2 kV
10 V (0.15 to 80 MHz)
J-60 Solid State Relays with Failure Detection Function G3PC
Engineering Data
Input Voltage vs. Input
Current
Input Voltage vs. Input
Impedance
)
10
Ω
8
Input impedance (k
Input current (mA)
6
4
2
0
Input impedance
Input current
10 20 30 40
Ta = +25°C
Input voltage (V)
Load Current vs.
Ambient Temperature
25
20
Load current (A)
15
10
5
0
-20 0 20 40 60 80 100
Ambient temperature (˚C)
One Cycle Surge Current:
Non-repetitive
The figure will be less than 1/2 the rated
value for repetitive input.
250
200
150
Inrush current (A. Peak)
100
50
0
10 30 50 100 300 500 1,000 3,000 5,000
Energized time (ms)
Solid State Relays with Failure Detection Function G3PC J-61
SSR
Operation
■ Failure Detection Function
Conditions for SSR Failure Detection
Failure mode
(See note 1.)
SSR short-circuit OFF 0.5 s max. (See note 2.) Red Open collector transistor
SSR half-wave short-circuit OFF
SSR open-circuit ON
SSR half-wave open-circuit ON
Operating input (between
terminals A1 and A2)
Detection time Alarm display
(See note 3.)
Alarm display (between
terminals X1 and X2)
(See note 3.)
output
Note: 1. The contents of each of the above failure modes is as follows:
SSR short-circuit: SSR output circuit remains in the ON state.
SSR half-wave short-circuit: SSR output circuit remains in the ON state in one direction.
SSR open-circuit: SSR output circuit remains in the OFF state.
SSR half-wave open-circuit: SSR output circuit remains in the OFF state in one direction.
In addition to the failure modes listed above, detection of circuit disconnections for the load circuit is also possible. (As a rough guide,
circuit disconnection will be detected if the load impedance is greater than or equal to 1 MΩ.)
2. The same power supply is used for both the detection and for the output circuit and so detection is not performed during power
interruptions.
3. If power supply (terminal 3) is in the open state, the SSR will still turn ON and OFF in the same way but the failure detection function and
alarm display will not operate properly.
Connection Diagrams (Main Circuit)
The following diagrams show the applicable load connection configurations for SSR failure detection.
Single Phase 3-phase Star
Connection
G3PC G3PC G3PC G3PC G3PC G3PC G3PC G3PC
Heater
Heater
Heater
r
Heate
Note: 1. With 3-phase connection, so that the power supply voltage is applied between the G3PC’s terminals 1/L1 and 3, connect the desired
phase to terminal 3.
2. Above mentioned products are 200V only. They are not suitable for three-phase 400V, but for three-phase 220V only.
3-phase Delta
Connection (3-phase,
2-wire Switching)
Heater
Heater
Heater
3-phase V
Connection
Heater
Heater
Timing Chart
SSR failure detection
Main circuit power
supply (load side)
Operating input
(between terminals
A1 and A2)
Input LED
(yellow)
Load current
RDY/ALM LED
(Green: ; Red: )
Alarm output
(between terminals
X1 and X2)
SSR ON normally SSR OFF normally SSR short-circuit Reset (See note.) SSR open-circuit Reset (See note.)
Note: After failure detection, if the detection conditions differ to the conditions given under Conditions for SSR Failure Detection, alarm output is
reset.
J-62 Solid State Relays with Failure Detection Function G3PC
Circuit disconnection detection on the load side
Load circuit disconnection
Reset (See note.)
Dimensions
84.2
5
8
90
0.2
80
8.5x3
90
0.3
3
0.3
e
pen.
s
e
cove
sed.
e
130 max.
.
.
Terminal cover
.
4
G3PC-220B-VD
Accessories (Order Separately)
Mounting Tracks
PFP-100N, PFP-50N
4.5
15 251025
1,000 (500)
1,000 (500)
1,000 (500)
Note Values in parentheses indicate dimensions for the
PFP-50N.
1,000 (500)
(see note)
(see note)
(see note)
25 25
10
7.3±0.15
35±0.3
15 (5)
(see note)
27±0.15
13.
6
100 max
Note The above diagram is
n the terminal
for wh
cover is o
PFP-100N2
4.5
25
15
25
10
1,000
22.5 max
Tow, 4.6 dia
4.6x5.6 elliptic hol
Note The above diagram is
for wh
r is clo
35±0.3
25
15
25
10
Mounting Hole
Three, 4.5 dia. or M
1
n the terminal
27
24
1
16
29.2
1.5
SSR
Solid State Relays with Failure Detection Function G3PC J-63
Installation
■ External Specifications
Terminal Arrangement
Terminal name Terminal number Screw size
Main circuit terminals
1/L1, 2/T1 M4
(output)
Detection power sup-
3
ply terminal (input)
Operating circuit ter-
A1, A2 M3.5
minals (input)
Alarm output termi-
X1, X2
nals (output)
Indicators
Name Symbol Color Meaning
Status indicators RDY Green SSR normal
ALM Red SSR failure detection
Input indicator INPUT Yellow Operating
Note: The same indicator is used as both the power supply indicator
and the alarm indicator.
and circuit
disconnection
detection
■ Connection Example
Appearance
A1(IN
A2(IN
X1(ALM
X2(ALM
1/L1
+)
−)
+)
−)
2/T1
3
RDY/ALM
INPUT
(See note 1.)
Display Labels
L1
1
AC
Voltage output for Temperature
Controller, sequencer
12 to 24
VDC
Input for Temperature
Controller, sequencer
30 VDC
min.
(See note 2.)
Heater
3
A1
IN
A2
X1
ALM
X2
2
T1
Note: 1. If the detection power supply terminal (terminal 3) is not connected, failure detection is not performed and so be sure to connect this
terminal.
2. If the load is connected to terminal 1/L1, failure detection may not operate correctly and so connect the load to terminal 2/T1.
3. With inductive loads (relay coil, etc.), connect back-current prevention diodes to both sides of the load.
J-64 Solid State Relays with Failure Detection Function G3PC
Safety Precautions
■ Precautions for Correct Use
Please observe the following precautions to prevent failure to
operate, malfunction, or undesirable effect on product performance.
Mounting Method
DIN Track Mounting
When mounting to a DIN track, mount the G3PC until it clicks into
place, otherwise it become loose during use and fall. Fix both ends
with end plates.
Panel Mounting
When mounting directly to a panel, observe the following conditions:
Screw diameter: M4
Tightening torque: 0.98 to 1.47 N·m
Vertical Mounting Horizontal Mounting
Panel
Vertical direction
Note: Use the G3PC at a load current of 50% of the rated load current
when it is mounted horizontally.
Close Mounting
Panel
• Make sure that all lead wires are of a thickness appropriate for the
current.
• The output terminals are charged, and touching them may result in
electric shock, even when the G3PC is OFF. Separate the outputs
from the power supply by installing a circuit-breaker at a higher
level in the circuit.
Tightening Torque
Be sure to tighten the screws to the specified torques given below.
Not doing so may result in malfunction.
Terminal number Screw terminal
A1, A2, X1, X2 M3.5 0.59 to 1.18 N·m
1/L1, 2/T1, 3 M4 0.98 to 1.47 N·m
diameter
Tightening torque
Wiring duct
5 mm
Wiring duct
Note: Use the G3PC at a load current of 80% of the rated load current
when it is mounted side by side.
80 mm min.
80 mm min.
Wiring
• When using crimp terminals, observe the terminal clearances
shown below.
Main Circuit Power Supply
(Terminals 1 to 3)
10 7.0
12.4
Operating Input/Alarm Output
(Terminals A1, A2, X1, and X2)
10
M3.5
SSR
Solid State Relays with Failure Detection Function G3PC J-65
ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.
To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.
Cat. No. J127-E1-03
In the interest of product improvement, specifications are subject to change without notice.
J-66 Solid State Relays with Failure Detection Function G3PC
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