CERUS CI-007-P2, Installation, Programming Operation, & Maintenance Manual

Page: 29 / 137

Chapter 3 – Installation & Wiring
3-6
3.2.5 Control Inputs and Outputs Description
Notes: 1) M1~M8 are Digital Inputs and each can be re-programmed from Normally Open to Normally Closed.
2) Analog Common Terminal: 5G for 7.5~40HP VFDs and CM for 50~700HP VFDs.
Type Symbol Name Description
In
p
u
t
si
g
n
al
D
ig
it
al
I
n
p
u
ts
S
el
ec
ti
o
n
s
M1, M2 &
M3
(1)
Programmable Digital
Inputs 1, 2 & 3 Multi-Function Programmable Digital Inputs.
(Factory setting: Multi-Step Frequencies 1, 2 & 4)
FX [M7]
(1)
Forward Run Command Forward Run When Closed and Stopped When Open.
RX [M8]
(1)
Reverse Run Command Reverse Run When Closed and Stopped When Open.
JOG [M6]
(1)
Jog Run
Runs at Adjustable Jog Frequency when the Jog Signal
is ON. The Direction is set by the FX (or RX) Signal.
BX [M5]
(1)
VFD Disable
When the BX Signal is ON the Output of VFD is Turned
Off. When Motor uses an Electrical Brake to Stop, BX
is used to Turn Off the Output Signal. Take caution
when BX Signal is OFF (Not Turned Off by Latching)
and FX Signal (or RX Signal) is ON. If so, motor
continues to Run.
RST [M4]
(1)
Fault Reset Used for Fault Reset.
CM
Digital -24VDC
Common All CM terminals are connected together internally and
Common for Digital inputs.
24 +24VDC Power Supply
24VDC power supply for digital inputs and external
loads with maximum current consumption of 50mA
V+ & V-
(2)
B/-12VDC
100mA Power Supply
DC power to sensors, potentiometer etc. Provides
+12VDC and -12VDC corresponding to Analog
Common 5G (CM)
(2)
A
n
al
o
g
I
n
p
u
ts
V1
(2)
0-10VDC Analog
Input.
Impedance 20 k Analog input for speed reference or process feedback
transducer. Can be set to any configuration up to
12VDC.
I
(2)
4-20mA Analog Input.
Impedance 249 Analog input for speed reference or process feedback
transducer. Can be set to 0-20mA range.
A0 & B0 Pulse Frequency Inputs
Pulse frequency determines the VFD frequency
reference.
5G (CM)
(2)
Analog I/O Common
Terminal Common Terminal for Analog Inputs and ±12VDC
power supply.
M
o
to
r
se
n
so
r NT (ET) External motor thermal
sensor
Motor thermal sensor input is used to prevent motor
from overheating by monitoring NTC or PTC thermistor
sensor.
5G Common for NT(ET) Common Terminal for External motor thermal detection.
RS485
terminal
C+ & C-
RS485 signal (High and
Low) RS485 signal (See RS485 communication in the manual
for more details.)
CM RS485 common Common Ground. Terminal for RS485 interface.
O
u
tp
u
t
si
g
n
al
V
o
lt
ag
e
S0, S1,5G
Programmable Voltage
Output
Voltage output for one of the following: Output
Frequency, Output Current, Output Voltage, DC Link
Voltage. Default is set to Output Frequency. (Maximum
Output Voltage and Output Current are 0-12V and
1mA).
R
el
ay
C
o
n
ta
ct
s
3A, 3C, 3B Fault Contact Output
When VFD trips, the fault relay will be activated.
Normal contact state: 3A-3C Open and 3B-3C Closed.
Contact ratings: 1A at 250VAC and 30VDC
A1/C1~A4/C4
Programmable Digital
Outputs Programmable Digital Output Relays.
Contact ratings: 1A at 250VAC and 30VDC