Advertisement
3.2 Input and Output Signals
3.2.1
AC Input Signals
Table 3.2.1 shows the AC input signals necessary for the GRD150 model and their respective
input terminal numbers.
Term. No.
of TB1
1-2
3-4
5-6
7-8
9-10
11-12
13-14
15-16
17-18
(*): Required for Model 200 and 400 series with SEF elements.
(**): Phase voltage is required for Model 300 and 400 series with autoreclose function.
3.2.2
Binary Input, Output Signals
The GRD150 provides 10 to 43 user-configurable binary inputs and 8 to 32 user-configurable
binary outputs mounted on IO1 to IO4 modules depending on its model. All inputs and outputs,
except the relay failure signal FAIL, are programmable by PLC function.
Figures 3.2.1 shows binary input circuits of IO1 and IO2. IO3 and IO4 have the same circuit of
IO2. For these signal number, see Appendix C.
Figures 3.2.2 shows binary output circuits of IO1 and IO2. IO3 and IO4 have the same circuit of
IO2. For these signal number, see Appendix C.
The relay failure contact closes when a relay defect or abnormality in the DC power supply circuit
is detected.
The operating voltage of binary input signal is typical 74V DC at 110V/125V DC rating and 138V
DC at 220/250V DC. The minimum operating voltage is 70V DC at 110/125V DC rating and
125V DC at 220/250V DC.
Table 3.2.1 AC Input Signals
[APPL-CT] setting
3P
2P
A phase
A phase
current
current
B phase
---
current
C phase
C phase
current
current
Residual
Residual
current
current
Zero
Zero
sequence
sequence
current (*)
current (*)
---
---
---
---
---
---
---
---
⎯
1P
3PN
---
---
---
---
---
---
Residual
---
current
Zero
sequence
---
current (*)
A phase
---
voltage
B phase
---
voltage
C phase
---
voltage
---
---
voltage (**)
⎯
128
6 F 2 S 0 8 4 2
[APPL-VT] setting
3PV
3PP
---
---
---
---
---
---
---
---
---
---
A phase
A-B phase
A-B phase
voltage
voltage
B phase
B-C phase
B-C phase
voltage
voltage
C phase
C-A phase
voltage
voltage
Residual
Residual
voltage or
voltage or
phase
phase
voltage (**)
voltage (**)
2PP
---
---
---
---
---
voltage
voltage
---
Residual
voltage or
phase
Advertisement
