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2.7 Control Terminal Functions
The following describes the functions of the control terminals. Many of these terminals have mul-
tiple functions determined by parameter settings. Some options provide additional terminals. See
Figure 2-2.
Terminal No.
Function
01, 02, 03 and 04,
05, 06
Two Form C output relays. Maximum 240 VAC, 2 A. Minimum 24 VDC,
10 mA or 24 VAC, 100 mA. Can be used for indicating status and warn-
ings. Physically located on the power card.
12, 13
24 VDC power supply to digital inputs and external transducers. The
maximum output current is 200 mA.
18, 19, 27, 29, 32,
33
Digital inputs for controlling the adjustable frequency drive. R = 2 kohm.
Less than 5 V = logic 0 (open). Greater than 10 V = logic 1 (closed).
Terminals 27 and 29 are programmable as digital/pulse outputs.
20
Common for digital inputs.
37
0–24 VDC input for safety stop (some units).
39
Common for analog and digital outputs.
42
Analog and digital outputs for indicating values such as frequency, ref-
erence, current and torque. The analog signal is 0/4 to 20 mA at a
maximum of 500
Ω
. The digital signal is 24 VDC at a minimum of 500
Ω
.
50
10 VDC, 15 mA maximum analog supply voltage for potentiometer or
thermistor.
53, 54
Selectable for 0 to 10 VDC voltage input, R = 10 k
Ω
, or analog signals
0/4 to 20 mA at a maximum of 200
Ω
. Used for reference or feedback
signals. A thermistor can be connected here.
55
Common for terminals 53 and 54.
61
RS-485 common.
68, 69
RS 485 interface and serial communication.
Term
18
19
27
29
32
33
37
53
54
42
1-3
4-6
Par.
5-10
5-11
5-12
5-13
5-14
5-15
5-19
6-1*
6-2*
6-5*
5-4*
5-4*
Table 2.2: Control Terminals and Associated Parameter
Control terminals must be programmed. Each terminal has specific functions it is capable of per-
forming and a numbered parameter associated with it. The setting selected in the parameter
enables the function of the terminal. See the FC Series Instruction Manual for details.
High Power Service Manual for VLT
®
FC Series
Adjustable Frequency Drives
2 Operator Interface and Adjustable Frequen-
cy Drive Control
MG.90.L1.22 - VLT
®
is a registered Danfoss trademark
2-17
2
Содержание VLT HVAC FC 100
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