Lenze 8240 HVAC Series - Manual (Page 35)

Installation
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4.2.3.2 Assignment of the control terminals
62
7
8
9
K11
K12
K14
20
28
E1
E2
E3
E4
39
K21
K22
K24
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Protection against contact
The control terminals have a basic isolation (double insulating
distance). The protection against contact is ensured without any
additional measures.
Protection against polarity reversal
The protection against polarity reversal prevents from the wrong
connection of the internal control inputs. It is however possible to
overcome the protection against polarity reversal by applying great
force. The controller cannot be enabled then.
Motor temperature monitoring
The connections of the motor-temperature monitoring (T1, T2) are
next to the connection terminals U, V, W.
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Terminal Use
(Factory setting is printed in bold) Level Data
Analog 7 GND 1 g
inputs 8 Setpoint input,
reference:
Terminal 7
(0 to 10V)
6
4
2
5
3
1
5 - 6
5 - 6
3 - 4
1 - 2 0 to 20 mA
4 to 20 mA
0 to 5 V
0 to 10 V Resolution: 10 bit
Linearity error:
±0.5 %
Temperature fault: 0.3 % (0...+40 °C)
Input resistance
Voltage signal: > 100 kΩ
Jumper
Voltage signal: > 100 kΩ
Current signal: 250 Ω
9 Supply for setpoint potentiometer 5.2V / 6mA
Analog
output 62 Analog output, reference: terminal 7
0 ... 6V (changes possible under C108) 0... 10 V / 2
mA
Resolution: 10 bit
Digital
inputs
20 Voltage supply for digital inputs
15 V/20 mA
p
28 Controller enable HIGH HIGH: 12 V ... 30 V
E4 CW rotation/
CCW rotation (CW/CCW) CW: LOW
CCW: HIGH LOW: 0 V ... 3 V
E3 DC-injection brake HIGH
E2 JOG frequencies Binary code
E1
q
20Hz, 30Hz, 40Hz
y
39 GND 2 (reference for external voltages)
Monitoring T1 Motore-temperature monitoring
(PTC thermistor/thermal contact) If not used: set parameter C119 = -0-!
T2 Motore-temperature monitoring
(PTC thermistor/thermal contact)
Terminal Use
(Factory setting is printed in bold) Relay position (switched) Data
Relay
output K1
K 11 Relay output normally-closed contact
(TRIP) opened 24 V AC / 3,0 A or
60 V DC / 0.5 A
p
K 12 Relay mid-position contact
K 14 Relay output normally-open contact
(TRIP) closed
Relay
output K2
K 21 Relay output normally-closed contact
(Ready for operation) opened 250 V AC / 3,0A or
60 V DC / 0.5A
p
K 22 Relay mid-position contact 250 V AC / 3,0A or
60 V DC / 0.5A
K 24 Relay output normally-open contact
(Ready for operation) closed 250 V AC / 3,0A or
60 V DC / 0.5A
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