Franklin Electric CERUS X-DRIVE CXD-003A-4V, Installation And Operation Manual

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ELECTRICAL INSTALLATION
Control Circuit Connections
42
2. Digital Inputs & RS-485 Communication – These connections provide input for a wide selection of
switches or programmable controls. Use shielded cable or twisted wires for 24 VDC digital control cir -
cuits wiring and separate these wires from the main power and motor wiring and other high voltage
circuits. Terminals accept wire sizes from 26~16 AWG (0.2~1.5mm
2
), and should be tightened to a
torque of 6.9 lb-in (0.78 Nm).
•
Digital inputs are configured for NPN (Sink) mode by default, with a jumper 24 and COM
terminals. Refer to
“NPN and PNP Digital Inputs Configuration” on page 46 .
• All digital inputs can be re-programmed from Normally Open to Normally Closed.
• Digital inputs are activated by voltage 11 VDC or greater. Maximum input voltage rating is 27 VDC
at 3.5 mA.
•
MI1-MI8
are programmable, multi-function digital inputs that can be used for a variety of switch -
ing features with common terminal DCM. Refer to
MI1 Define [IO–21]
through
MI8 Define [IO–28]
for
options.
NOTE:
MI1 FWD and REV behave as “No Function”
•
FWD & REV
are dedicated Forward and Reverse run commands. If any digital input is programmed
for FWD or REV, corresponding dedicated FWD or REV input will be disabled automatically.
•
SG+, SG–, & SGND
are RS485 communication terminals for PLC, Modbus, or BACnet. Use PLC Com
Type [PLC–23]
to set the com type. Termination resistance is controlled by micro switch. Set the 485
switch to the Down position to connect 120 Ω termination resistance for long distance or for an elec -
trically noisy environment.
•
+24
terminal provides 24 VDC (with DCM common) 50 mA power for digital control circuits and
150 mA for external transducers.
•
COM
terminal is a digital inputs common. By default, it is connected by jumper to +24 to configure
NPN (Sink) mode.
•
DCM
is the internal 24 VDC power supply common.
• Earth ground. Use this terminal to connect shield wires.
IMPORTANT: DCM and ACM terminals are isolated from each other and from the ground. Do not
connect these terminals to earth ground, which can cause electrical noise in control circuits and
unstable VFD operation.
3. Relay Outputs – These are configurable, multi-function, dry contact relays. Refer to
Relay RA1 [IO–47]
through
Relay RA3 [IO–49]
for options. Terminals accept wire sizes from 26~16 AWG (0.2~1.5mm 2 ), and
should be tightened to a torque of 4.3 lb-in (0.49 Nm).
•
Relays ratings are 1.25A at 250 VAC, or 3A at 30 VDC.
• RA1-RB1-RC1 is a single-pole, double throw relay. RA1-RC1 is N.O. (normally open), and RB1-RC1 is
N.C. (normally closed).
• RA2-RC2 and RA3-RC3 are independent single pole, single throw, normally open relays.
4. Safety Torque Off (STO) Inputs – These connections provide emergency stop control from an external
system. By default, the inputs are closed through jumper wires, allowing the drive to run.
5. RJ-45 Sockets – These connections are communication terminals for PLC, Modbus, or BACnet. Use
PLC
Com Type [PLC–23] to set the Com Type. Then set both Speed Reference and Run Command to RS485 . Both
RJ-45 sockets and terminals (SG+, SG-, & SGND) are connected internally.