Enlarged
illustration
Pin number
Symbol
E5ZE-8
j
-E
E5ZE-8
j
-E
222
Alarm Output and Cooling Side Control Output (For Heating and Cooling Control Model Only)
XW2B-20G4 or
XW2B-20G5
Screw Terminal
Point
number
Not used
Not used
Cooling side control output (Do not use these terminals when
using an E5ZE heating-only model.)
HS alarm
Alarm output
Alarm 1
HB alarm
Alarm 2
Common
Temperature
Controller error
Not used
Common
Connecting to G7TC-OC
Relay I/O Block
G7TC-OC08 Alarm Output
Temperature
Controller error
HS alarm
Alarm output
Alarm 1
HB alarm
Alarm 2
Not used
Not used
Drive power
supply for G7TC
(12 or 24 VDC)
G7TC-OC08
Relay I/O Block
G7TC-OC16 Alarm Output and Cooling Side Control Output (For Heating and Cooling Control Models Only)
Point
number
G7TC-OC16
Relay I/O Block
Drive power
supply for G7TC
(12 or 24 VDC)
Not used
Temperature
Controller error
HS alarm
Alarm output
Alarm 1
HB alarm
Alarm 2
Not used
Cooling side control output (Do not use these
terminals when using an E5ZE heater-only model.
Communication Interfaces
RS-232C
Pin Assignments
Signal name
Symbol
Signal direction
Pin
Signal ground
SG
---
7
Send data
SD
Output
2
Receive data
RD
Input
3
Send request
RS
Output
4
Send enable
CS
Input
5
Data set ready
DR
Input
6
Data terminal ready
ER
Output
20
Not used
NC
---
1, 8 to 19, 21 to 25
Electrical characteristics: Conforming to EIA RS-232C
Synchronization clock:
Internal
