4
Modular Temperature Controller for Gradient Temperature Control
EJ1G
■
Communications Specifications
Note: 1.
Connection from the EJ1C-EDU
2.
A special cable (EJ1C-CBLA050) must be purchased separately for the G3ZA connection.
3.
For the number of Units that can be connected, refer to
“Connection Precautions”
on page 9.
4.
When performing gradient temperature control, the number of control channels is limited by the group setting. For details, refer to
“Gradient Group Settings”
on page 11.
■
Current Transformer (CT)
Rating
■
Characteristics of the Heater
Burnout Alarm and Heater Short
Alarm
(TC2 Models Only)
Note: 1.
When the control output ON time is 100 ms or less, heater
burnout detection and heater current measurement are not
performed.
2.
When the control output OFF time is 100 ms or less, heater
short alarm and leakage current measurement are not
performed.
Item
Port A Terminal/ Port A Connector
(See note 1.)
G3ZA Connection Port
(See note 2.)
Transmission path connection
RS-485 (multipoint)
Communications method
RS-485 (two-wire, half duplex)
Synchronization method
Start-stop synchronization
Baud rate
38.4 kbps fixed
57.6 kbps fixed
Transmission code
ASCII
Data bit length
7 bits
Stop bit length
2 bits
Error detection
Vertical parity (even)
Block check character (BCC): with CompoWay/F
Flow control
None
Interface
RS-485
Retry function
None
Communications response wait time
1 to 99 ms (default: 1 ms)
---
Number of Units that can be connected in
parallel (See notes 3 and 4.)
16 Units (model numbers with TC4: 64 channels,
model numbers with TC2: 32 channels)
Communications connection via port A on the
End Unit
8 Units (Communications connection via G3ZA
port on the Basic Unit)
Dielectric
strength
1,000 VAC for 1 min
Vibration
resistance
50 Hz, 98 m/s
2
Weight
E54-CT1: Approx. 11.5 g, E54-CT3: Approx. 50 g
Accessories
(E54-CT3 only)
Armatures (2), plugs (2)
Maximum
heater current
100 A AC
Input current
indication
accuracy
±
5%FS
±
1 digit max.
Heater
burnout alarm
setting range
0.1 to 99.9 A (in units of 0.1 A)
0.0 A: Heater burnout alarm output turns OFF.
100.0 A: Heater burnout alarm output turns ON.
Min. detection ON time: 100 ms (See note 1.)
Heater short
alarm setting
range
0.1 to 99.9 A (in units of 0.1 A)
0.0 A: Heater short alarm output turns ON.
100.0 A: Heater short alarm output turns OFF.
Min. detection OFF time: 100 ms (See note 2.)
