Modular Temperature Controller for Gradient Temperature Control
EJ1G
1
Modular Temperature Controller for Gradient Temperature Control
EJ1G
Gradient Temperature Control to Achieve
Consistent Layer Temperature
• Perform gradient temperature control ranging from 2 to 32
channels.
• Perform 2-channel gradient temperature control for up to 16
groups, or 32-channel gradient temperature control for up to 2
groups.
• Set gradient temperature control or 2-PID control for each
group.
• Reduce design work for ladder programming with programless
connections to Programmable Controllers. (The same feature
as Standard-control EJ1 Models.)
• Connect directly to the G3ZA Multi-channel Power Controller
using optimum cycle control for high-accuracy control with
minimal noise.
Refer to the
“Safety Precautions”
on page 18.
Ordering Information
■
Temperature Controllers
Gradient Temperature Control
Note: 1.
An End Unit is required to connect an HFU to a Basic Unit. A Gradient Temperature Control HFU and a Gradient Temperature Control
Basic Unit must be used together to achieve gradient temperature control. The Gradient Temperature Control HFU and Gradient
Temperature Control Basic Unit are used exclusively for gradient temperature control, but the End Unit is the same as that used for the
Standard-control EJ1 Models.
The Basic Unit cannot communicate externally by itself.
2.
Heating/cooling control is not supported for gradient temperature control.
3.
When using the heater burnout alarm, use a Current Transformer (E54-CT1 or E54-CT3) (sold separately).
Name
Power
supply
voltage
No. of
con-
trol
points
Control
outputs
1 and 2
Control
outputs
3 and 4
Auxiliary
output
Functions
Communications
functions
Input type
Terminal
Model
Heater
burnout
alarm
Event
inputs
Basic Unit
(gradient
tempera-
ture
control)
(See note
1.)
24 VDC
supplied
from the
End Unit
2
Voltage
output:
2 points (for
SSR drive)
(See note
2.)
Transistor
output: 2
points
(sourcing)
None
2
(See
note 3.)
None
G3ZA connection
port: RS-485
From End Unit:
Port A: RS-485
Thermocou-
ple, platinum
resistance
thermometer,
analog voltage,
and analog
current select-
able for each
channel.
M3 terminal EJ1G-TC2A-QNH
Screw-less
clamp
EJ1G-TC2B-QNH
4
Voltage out-
put: 2 points
(for SSR
drive) (See
note 2.)
None
M3 terminal EJ1G-TC4A-QQ
Screw-less
clamp
EJ1G-TC4B-QQ
HFU
(gradient
tempera-
ture con-
trol)
(See note
1.)
None
None
None
Transistor
output:
4 points
(sourcing)
4
From End Unit:
Port A: RS-485
Port C: RS-485 or
RS-232C
selectable.
No input
M3 terminal EJ1G-HFUA-NFLK
Screw-less
clamp
EJ1G-HFUB-NFLK
From End Unit:
Port A: RS-485
Port C: RS-422
M3 terminal EJ1G-HFUA-NFL2
Screw-less
clamp
EJ1G-HFUB-NFL2
End Unit
(See note
1.)
24 VDC
Transistor
output:
2 points
(sourcing)
None
Port A: RS-485
Connector: Port A
M3 terminal EJ1C-EDUA-NFLK
Refer to the following manual for precautionary information and other information necessary to use the EJ1G:
EJ1G Modular Temperature Controller Operation Manual (Cat. No. H143)
