Control Terminals I/O Specification - Johnson Controls VFD66 Drive User Manual

4.4

Control terminals I/O specification

The control circuits are isolated from the power circuits in the drive by basic insulation
(single insulation) only. The installer must ensure that the external control circuits are
insulated from human contact by at least one layer of insulation (supplementary
insulation) rated for use at the AC supply voltage.
WARNING
If the control circuits are to be connected to other circuits classified as Safety Extra Low
Voltage (SELV) (e.g. to personal computer), an additional isolating barrier must be
included in order to maintain the SELV classification.
WARNING
4.4.1 VFD66 control connections
A
Alarm output 1 - drive OK (normally open)*
Voltage rating
Current rating
B
Alarm output 2
1
+5V output
Max current rating
2
Analog reference input 1
Voltage
Input impedance
Resolution
Accuracy
Sample time
3
Analog reference input 2
Voltage
Input impedance
Resolution
Accuracy
Sample time
4
0V Common
* Used with class 2 circuits.
4.4.2 Wiring input devices to a VFD66
Connect the appropriate low-voltage input signal device to Terminal Block TB1 (Figure
4-2 on page 12). See Table 4-4 below, Figure 4-6 on page 19, Figure 4-7 on page 19,
and Figure 4-8 on page 20 for additional information on wiring specific Johnson
Controls/PENN™ input devices to the VFD66 controls.
18
5-24Vac or 5-30Vdc
100μA at 24V minimum / 200mA maximum
20mA (short circuit proof)
0 to +5V / 0 to +10V
100kΩ
0.1%
±5%
6ms
0 to +5V / 0 to +10V
100kΩ
0.1%
±5%
6ms
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VFD66 User Guide
Issue Number: 2