Toshiba GRZ100 B Series, Instruction Manual

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3.2 Input and Output Signals
3.2.1 Input Signals
AC input signals
Table 3.2.1.1 shows the AC input signals necessary for each of the GRZ100 models and their
respective input terminal numbers. The AC input signals are input via terminal block TB1 for all
models.
For single or double busbar applications, one voltage signal is required for voltage and
synchronism check of autoreclose function, while for one-and-a-half circuit breaker
arrangements, two voltage signals are required.
Table 3.2.1.1 AC Input Signals
Terminal No. GRZ100-101, 102, 201, 202, 203,
204, 205, 206, 401
GRZ100-301, 302, 303, 501
1-2
3-4
5-6
7-8
9-10
11-14
12-14
13-14
15-16
17-18
20
A phase Current
B phase Current
C phase Current
Residual Current (Protected line)
Residual Current (Parallel line)
A phase Voltage
B phase Voltage
C phase Voltage
Voltage for Autoreclose
(earth) A phase Current
B phase Current
C phase Current
Residual Current (Protected line)
Residual Current (Parallel line)
A phase Voltage
B phase Voltage
C phase Voltage
Voltage for Autoreclose
Voltage for Autoreclose
(earth)
Binary input signals
Input signals are configurable and depend on the GRZ100 models. See Appendix G for the default
settings and external connections.
The binary input circuit of the GRZ100 is provided with a logic level inversion function as shown
in Figure 3.2.1.1. Each input circuit has a binary switch BISW which can be used to select either
normal or inverted operation. This allows the inputs to be driven either by normally open or
normally closed contact.
If a signal is not input, the function concerned is disabled.
Further, all binary input functions are programmable by PLC (Programmable Logic Controller)
function.
The operating voltage (pick-up) 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.