I/O Terminal Connections - Emerson EVH Series Installation Manual

Factory-Set Control Terminal Functions
I/O Connection
External Wiring Pin Signal Name
1 +10V
2 AI1+
3 AI1-
i
4 AI2+
5 AI2-
6 GND
7 DIN5
8 DIN6
9 DIN7
10 DIN8
11 CMB
12 GND
13 24Vo
14 DO1
15 24Vo
16 GND
17 AO1+
18 AO2+
19 24Vi
20 DIN1
21 DIN2
22 DIN3
23 DIN4
24 CMA
25 A
26 B
27 R3NO
28 R1NC
29 R1CM
30 R1NO
31 R3CM
32 R2NC
33 R2CM
34 R2NO
Notes
- The above wiring demonstrates a SINK configuration. It is important that CMA and CMB are wired to
ground (as shown by dashed line). If a SOURCE configuration is desired, wire 24 V to CMA and CMB
and close the inputs to ground. When using the +10 V for AI1, it is important to wire AI1—to ground (as
shown by dashed line). If using +10 V for AI1 or AI2, terminals 3, 5, and 6 need to be jumpered
together.
- AI1+ and AI2+ block that it can support 10K potentiometer.
Signal
Ref. Output Voltage
Analog Input 1
a
Analog Input 1 Ground
Analog Input 2
a
Analog Input 2 Ground
I/O Signal Ground
Digital Input 5
Digital Input 6
Digital Input 7\TI+
Digital Input 8\TI-
DI5 to DI8 Common
I/O Signal Ground
+24VDC Output
Digital Output 1
+24VDC Output
I/O Signal Ground
Analog Output 1
Analog Output 2
+24VDC Input
Digital Input 1
Digital Input 2
Digital Input 3
Digital Input 4
DI1 to DI4 Common
RS-485 Signal A/+
RS-485 Signal B/-
Relay 3 Normally Open
Relay 1 Normally Closed
Relay 1 Common
Relay 1 Normally Open
Relay 3 Common
Relay 2 Normally Closed
Relay 2 Common
Relay 2 Normally Open
Default Setting Description
- 10VDC Supply Source
0-10V Voltage Speed Reference (Programmable to 4-20mA)
- Analog Input 1 Common (Ground)
4-20mA Current Speed Reference (Programmable to 0-10V)
- Analog Input 2 Common (Ground)
- I/O Ground for Reference and Control
Preset Speed B0 Sets frequency output to Preset Speed 1
Fire Mode Enables drive into Fire Mode
Bypass Start Enables drive into Bypass mode waiting for drive start
Force Auto Input forces drive into Auto Control place
Grounded Allows source input
- I/O Ground for Reference and Control
- Control voltage output (100mA Max)
Ready Shows the drive is ready to run
- Control voltage output (100mA Max)
- I/O Ground for Reference and Control
Output Frequency Shows Output frequency to motor 0 - 60Hz (4-20mA)
Motor Current Shows Motor current of motor 0-FLA (4-20mA)
- External control voltage input
Run Forward Input starts drive in forward direction (start enable)
Run Reverse Input starts drive in reverse direction(start enable)
External Fault Input causes drive to fault
Fault Reset Input resets active faults
Grounded Allows source input
- Fieldbus Communication (Modbus, BACnet)
- Fieldbus Communication (Modbus, BACnet)
Fault Relay output 3 shows VFD is Faulted
Bypass Run Relay output 1 shows VFD is in a bypass run state
Fault Relay output 3 shows VFD is Faulted
Run Relay output 2 shows VFD is in a drive run state
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