XP Power NLB Non Isolated Analog Programming Interface for PLC Instruction Manual
- June 1, 2024
- XP Power
Table of Contents
XP Power NLB Non Isolated Analog Programming Interface for PLC
Product Information
Specifications
- Product Name: Analog Programming Interface for PLC
- Version: 9.7
- Manufacturer: XP Power FuG
- Location: Am Eschengrund 11, D-83135 Schechen, Germany
Product Usage Instructions
Analog Programming Option / Interface
General
The analog interface (15-pole Sub-D socket on the rear panel) is used to control voltage setting, current setting, OUTPUT ON/OFF, and special functions based on the unit type. Actual values are provided as analog voltages while control modes are digital signals. The interface is located on the rear panel of the DC power supply.
Function: Voltage and current values can be set using normalized analog signals. The internal reference voltage +10V can be accessed at pin 10 for generating setpoint signals.
Signal and Control Cable: The analog interface uses a shielded Sub-D socket. The shield is connected to the housing potential (PE). Ensure proper shielding and grounding for compliance with electromagnetic compatibility (EMC).
Voltage Limitation: Voltage limitation set by potentiometer VLIMIT on the front panel remains active. Device characteristics like accuracy and stability are unaffected due to direct signal coupling.
Warning: Units with non-isolated analog programming option must not be operated potential-free to prevent personal injury and property damage.
Foreseeable Misuse when Using Analog Programming
Danger: Pulling the analog programming interface cable in ANALOG mode can cause the output voltage to drop to 0V. Reconnecting the cable without changing settings will output the last set values.
Frequently Asked Questions
Q: Can I use the analog interface for all types of devices?
A: The assignment of pins may vary depending on the device series. Refer to the overview for analog programming in the manual for specific information.
Q: What is the maximum permissible length of the shielded cable for the analog interface?
A: The maximum permissible length is 3m to ensure compliance with electromagnetic compatibility (EMC) requirements.
Interface to the operating instructions
(Translated from German)
Version: 9.7
This manual was created by: XP Power FuG, Am Eschengrund 11, D-83135 Schechen, Germany
Analog Programming option / interface
General
The analog interface (15-pole Sub-D socket on the rear panel) is used to
control the functions voltage setting, current setting as well as OUTPUT
ON/OFF and special functions, depending on the unit type. The current actual
values are provided as analog voltages and the latest control modes as digital
signals.
The assignment of some pins differs depending on the device series. Please
refer to the overview for analog programming under 1.3.
The interface is located on the rear panel of the DC power supply.
Function
Voltage and current values can be set with normalized analog signals (external
reference). The internal reference voltage +10 V can be tapped at pin 10 and
used to generate these setpoint signals (e.g. with 10 Kg potentiometers), see
wiring options under 1.
Signal and control cable
The analog interface is implemented via a shielded Sub-D socket. The shield is
connected to the housing potential (PE). The mating connector, as well as the
data link, must be shielded and the shields must be connected to each other.
The maximum permissible length of the shielded cable is 3m. These are
requirements for compliance with electromagnetic compatibility (EMC), see also
the Declaration of Conformity in the appendix.
Voltage limitation
The voltage limitation, if present adjustable by the potentiometer VLIMIT on
the front panel of the DC power supply, is still active.
Due to the direct coupling of the analog signals, the device characteristics like accuracy, linearity, stability and temperature coefficient remain unchanged.
WARNING
Please note that the power supply units which are equipped with the non-
isolated analog programming option CANNOT be operated potential-free!
This potential connection protects against personal injury and property
damage.
For safety reasons one output pole depending on the device type is delivered
earthed.
Types of devices
HCB| HCK| HCP| MCA| MCP| NLB| NLN| NTN
„0V“ earthed| „-“ or „A-“ earthed| „A0“
earthed
| „+“
earthed
| „A+“
earthed
Foreseeable misuse when using analog programming
WARNING
Danger of electrical shock at the power outputs!
If the device is operating in ANALOG mode and the analog programming interface cable is pulled, the output voltage drops to 0V after the unloading time which depends on the connecting load. Once the analog programming interface cable is plugged in again without changing the remote control settings, the last set values will be present at the outputs.
Overview of analog programming
Pin| Description| Type| Function
1| CC| DO| supplies approx. +24 V if power supply is in constant current mode.
Equivalent to LED CC, Ri approx. 2.7 KΩ
2| CV| DO| Supplies approx. +24V if power supply is in constant voltage mode.
Equivalent to LED CV, Ri approx. 2.7 KΩ
3| I-MON| AO| actual output current monitor signal 0…+10 V represents
0…nominal current
4| VPS| AO| Slider Voltage pot on front panel 0…+10 V, Ri approx. 10 KΩ
5
| Not used| | For devices of the HCB series without function.
IPS| AO| Slider Voltage pot on front panel 0…+10 V, Ri approx. 10 KΩ
6| OUTPUT ON| DI| OUTPUT ON +24 V
7
| Not used| | for devices of the HCB, MCA, MCP, NLN, NTN series without function.
POL-SET
| DI| control input for electronic polarity reversal switch (Option) POS = pin (7) open,
NEG = connected to Pin (6) 0VD
V/I REG| DI| switchover voltage/current regulation only applies to the NLB series
V-REG mode: connect Pin7 with Pin6 (Pin7=0), I-REG mode: Pin7 unconnected
8| V-SET| AI| 0…+10 V equals 0…Unominal, input resistance to 0V approx. 10 MΩ
9| 0V| A-GND| ground for analog signals, must not carry any current
10| +10VREF| AO| +10 V Reference (output), max. 2 mA
11| V-MON| AO| actual output voltage monitor signal 0…10 V represents
0…Unominal; Ri approx. 100 Ω
12| 0VD| DI| 0V (24V0) and 0 V by option polarity reversal switch
13
| Not used| | for devices of the MCP series without function
POL-Status
| ****
DO
| polarity status (option) applies to devices with polarity reversal switch. POS polarity = approx. +24 V,
NEG polarity = 0 V
Ri approx. 2.7 KΩ
-10V REF| AO| for the devices of the HCB, NLB series
P-LIM| DO| delivers approx. +15 V, when the MCA series device is driven
into power limit,
equivalents to LED P-LIM on the front panel
S-REG| DO| Delivers approx. +15 V, if NTN, NLN series device in SENSE control (only with active
sensor operation), equivalent to LED S-ERR on front panel.
14| +24V| DI| +24 V from PLC
15
| Not used| | for devices of the HCB series
I-SET| AI| 0…+10 V equals 0…Inominal, input resistance against 0 V approx. 10
MΩ
All values of voltages and currents are in DC. D=Digital, A=Analog, I=Input,
O=Output
Pay attention to your unit type and options in the coloured lines.
Wiring options
Operation of the analog interface
WARNING
Enable of OUTPUT ON/OFF
The DC OUPUT is switched on by pin 12 and pin 6, see 1.3
If the DC OUTPUT is switched on with 24V between pin 6 and pin 12, the OUTPUT
remains active until the voltage between pin 6 and pin 12 or the mains is
switched oV.
In the event of a mains voltage failure, the DC OUTPUT remains enabled. As
soon as the mains voltage is supplied again, the DC OUTPUT is active again!
Electric shock possible due to residual voltage at the output!
When the unit is switched oV or in the event of a power failure, residual
voltage / current will NOT be
displayed on the monitor outputs!
Observe the discharge time!
Putting the analog programming option / interface into operation
- The installation of the analog interface has to be executed when the DC power supply is not in operation!
- The interface of the control unit shall be connected to the interface of the DC power supply as specified.
- Now turn on the POWER switch (1).
- Select the ANALOG operating mode with the switch or switches. The ANALOG LED now lights up.
The device is now operated externally via the programming socket!
To switch the power supply oN, proceed as follows:
- Set the values at the pin (8) V-SET and pin (15) I-SET to 0 V.
- Switch oV the operating voltage between Pin 6 and 12.
- After the output voltage has reached a value < 50 V, switch the device completely oV using the
POWER switch.
The DC power supply is switched oV.
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