ELABO 2GA27 90-2A User manual

Operating manual
PE conductor tester
2GA27 90-2A
DIN EN ISO 9001
certified
z
Calibration at ELABO factory
z
Calibration at customer premises
z
Test units on loan
)
Hotline ++49 7951/307-0
ELABO GmbH
D-74564 Crailsheim
LGA
ELABO after sale service:

2
PE-Conductor Tester 2GA27 90-2A
Description
Table of contents
A DESCRIPTON OF FRONT PANEL CONTROLS ....................................3
1 INTRODUCTION......................................................................................5
1.1 GENERAL INFORMATION .....................................................................5
1.2 ABBREVIATIONS AND SYMBOLS ........................................................ 6
1.3 SHORT DESCRIPTION OF THE PE CONDUCTOR TESTER ................ 6
1.4 GENERAL DATA..................................................................................... 7
1.5 NAME PLATES ....................................................................................... 7
2 SAFETY REGULATIONS ........................................................................8
2.1 SIGNS OF SAFETY AND WARNING REGULATIONS ...........................8
2.2 WARRANTY ............................................................................................ 8
2.3 USE AS PER SPECIFICATIONS AND EXCLUSION OF LIABILITY ...... 8
2.4 GENERAL RULES OF CONDUCT AND SAFETY REGULATIONS ....... 9
2.5 PARTICULAR REFERENCES TO THE PE CONDUCTOR TESTER.... 10
3 PUTTING INTO OPERATION................................................................ 11
3.1 TRANSPORT AND INSTALLATION ..................................................... 11
3.2 CONNECTION ....................................................................................... 11
3.3 SETTING THE TEST UNIT PARAMETERS .......................................... 12
4 OPERATING MODES............................................................................ 14
4.1 MEASURING PRINCIPLE ..................................................................... 14
4.2 PE CONDUCTOR TEST WITHOUT THREE-WIRE PLUG .................... 15
4.3 TEST VIA THREE-WIRE PLUG............................................................. 16
4.4 TEST WITH TEST PROBE (SO)............................................................ 17
4.5 OPERATION IN COMBINATION WITH AN INSULATION
TESTER....................................................................................... 18
5 OPERATION VIA INTERFACE.............................................................. 19
5.1 PIN ASSIGNMENT OF INTERFACE TERMINAL STRIP (X7)............... 19
5.2 TERMINAL ASSIGNMENT OF THE 11-PIN VG
CONNECTOR (X1) ...................................................................... 21
5.3 TERMINAL ASSIGNMENT OF THE TERMINAL BLOCK (X6) .................
6 FAULT INDICATIONS ........................................................................... 22
7 MAINTENCANCE AND ATTENDANCE ................................................ 23
7.1 EXCHANGE OF FUSES ........................................................................ 23
7.2 SERVICE OF THE HOUSING................................................................ 24
8 TECHNICAL DATA ............................................................................... 25
9 APPENDIX............................................................................................. 26
9.1 COMPONENT LOCATION ILLUSTRATION OF .......................................
SUBASSEMBLY PE100 .............................................................. 27
9.2 COMPONENT LOCATION ILLUSTRATION OF .......................................
SUBASSEMBLY PEIS200........................................................... 28
9.3 WIRING DIAGRAMM............................................................................. 30

3
PE-Conductor Tester 2GA27 90-2A
Description
S4 S2 S3 X5 X4 S1/H1 X4a X3a
P1 T1 X2
X1 X6-3 / X6-1 X7
R1 V1 V2 V3 V4 X3
A DESCRIPTON OF FRONT PANEL CONTROLS
Front panel
Rear side
safetylab terminalsfor testcurrent

4
PE-Conductor Tester 2GA27 90-2A
Description
A DESCRIPTON OF FRONT PANEL CONTROLS
No. Equipment Operation
P1 Resistance and current
measuring instrument
analog
Displayrange
resistance 0 ... 0.3
current 0 ... 30 A
R1 Potentiometer Adjusting of Rmax (providing push-button S4 is
pressed)
S1/H1 Illuminated rocker switch ON / OFF switching with switching mode display
S2 Push button START - start of measurement.
At simultaneouslypressing of push-button S2 and S3
the display of the test current is achieved on P1.
S3 Push button RESET - Continuation of a measurement after an
interruption.
At simultaneouslypressing of push-button S2 and S3
the display of the test current is achieved on P1.
S4 Push button If S4 is operated Rmax can be adjusted at R1 and
displayed on P1
T1 Adjustable transformer Setting range 9 to 27 A test current. Press S2 and S3
simultaneously and read on P1
V1 LED, green Measurement < Rmax "Passed"
V2 LED, red Measurement > Rmax "Fault"
V3 LED, red Test current < 9 A
V4 LED, red Test current > 27 A, test is interrupted
X1 11-pin VG connector Mains supply
X2 Ground outlet
German standard (Schuko) Connection of test object
X3 Jacks Connection of test object (current left)
V3a Jacks Connection of test object (current right)
X4 Safety lab terminals Connection of sensor leads (left)
X4a Safety lab terminals Connection of sensor leads (right)
X5 Diode socket 5 pole, connection of test probe
X6-1 Safety lab terminals
parallel to X3a Connection of test object (current right) Sense lines on VG connector X7 pin 29 and 31
X6-3 Safety lab terminals
parallel to X3 Connection of test object (current left) Sense lines on VG connector X7 pin 29 and 31
X7 64-pin VG connector Interface connector for external control of various input
and output signals

5
PE-Conductor Tester 2GA27 90-2A
1. Indroduction
1. INTRODUCTION
Thesecurityofallpersonscomingintocontactwith thetest unitis decisively
dependent upon the mastery of the unit. Therefore:
Read the operating instructions before
the first putting into operation!
1.1 GENERAL INFORMATION
The operating instructions enable the user to become familiar with the
testerandits application possibilities andtouse it as perthespecifications
before the first operation. They contain important information which
guarantee a functional, economic and safe operation and have to be
available always at the operational place of the tester.
The operating instructions are not only an indispensable lead-in for
operators who have to be instructed from the very beginning but they also
contain useful tips, information and suggestions for the skilled operator.
They are a necessary reference book for all operators. By reading the
operating instructions
•dangers are avoided
•sequences of operations are optimized and accelerated
•cost of repair and times of standstill are minimized
•reliability and service life are increased
Theoperating instructionsshouldalso beattentivelyread bythe unitowner
and the person responsible for the operation. Particularly with regard to
transport and installation as well as warranty questions.
In chapter 2 important information regarding security and risks are given
which prepare you for danger situations that may arise. During operation
it is unfortunately too late to read again. In addition to this please, note the
following rule:
Cautious and careful working is the
best protection from accidents!
The testing quality of the unit is decisively dependent on maintenance
and attendance. Regular activities concerning maintenance and
attendancearedescribed intheseoperatinginstructions.We havepleasure
in supporting you in case of necessary repairs and supply you with the
original spare parts.
If you have any questions after reading the operating instructions the
ELABO Hot -line (Telephone [phone]) is at your disposal for further
details.
For betteruseof the operating instructions the coverpagecanbe opened
out. Through this the illustration of the front or rear panel of the unit is
always visible for the user while reading the operating instructions.

6
PE-Conductor Tester 2GA27 90-2A
1. Indroduction
•1
•
SO
1.2 ABBREVIATIONS AND SYMBOLS
Special option, does not belong to the standard delivery extent
Enumeration, the recommended sequence is to be observed herewith
Enumeration
ATTENTION ELECTRIC VOLTAGE !
Danger spot to users and third persons! - Chap. 2.1
Danger to the instrument ! - Chap.2.1
Reference for the effective and economic mode of operation - Chap. 2.1
1.3 SHORT DESCRIPTION OF THE PE CONDUCTOR TESTER
The measuring instrument 2GA27 90-2A serves for the testing of the
efficacy of the PE conductor connection. For instruments of the protection
class I exists the demand that the resistance of the connection between
the PE conductor terminal or the PE contact of an equipment‘s plug and
the parts to be joined with the protective conductor should not exceed 0.1
Ω.
Thetestcurrent issteplesslyadjustable.Throughthe employedtestmethod
the resistance value will be calculated from current and voltage with high
precision. The resistance is displayed during the entire testing time by
means of an analog measuring instrument.
The item on test can be connected alternatively to a socket outlet or via
two terminals.
At the instrument a maximum permissible resistance can be adjusted
individually. If the preset resistance R max is exceeded during a
measurement, a visual error is displayed (LED FAULT).
In order to achieve a non-destructive test the test current is switched on
only after operating the push-button START resp. after pressing the tip of
the test probe in.
The measuring instrument is set up as subdrawer with 36 pitches and
conceives already in the standard design for program-controlled
application.Theconnectionisconductedviaamultipleconnectoraccording
to DIN 41612.

7
PE-Conductor Tester 2GA27 90-2A
1. Indroduction
ä
SN. 0000042483
ELABO GmbH
Rossfelder Str. 56
D-74564 Crailsheim
Telefon: [phone]
Telefax: [phone]
Nennspg.V ~
NennstromA
Typ
Baujahr
230V ;49 -61 Hz
1.25 A
90-2A
2003
Fig. 1.1: ELABO name plate
1.4 GENERALDATA
Test current (preselectable): 9 to 27 A
Measuringrange: 0 to 0.3 Ω
Workingtemperature: 10oC to 50oC
Atmospherichumidity: 25 - 75% rel.airhumidity
Powersupply: 230 V +10% -10%/ 49 to 61 Hz
Dimensions: Euro-Subdrawer3HU/36 pitches. Depth196mm
Weight: 6 kg
1.5 NAME PLATES
ELABO PE-Conductor Tester 2GA27 90-2A.

8
PE-Conductor Tester 2GA27 90-2A
2. Safety regulations
2. SAFETY REGULATIONS
Beforeworkingwiththe devicethe operatinginstructions andall enclosures
must have been attentively read and understood by all persons operating
the tester. The tester may be operated by trained and skilled staff only.
ELABO has equipped the unit with all necessary safety devices when
using them as per the specifications in order to protect the operator from
appearing risks. Pay attention:
CAUTIOUS AND CAREFUL WORKING IS THE
BEST PROTECTION FROM ACCIDENTS !
2.1 SIGNS OF SAFETY AND WARNING REGULATIONS
Danger Area! Electric Voltage - Danger to life !
IN DEALING WITH ELECTRIC VOLTAGE THERE IS DANGER TO LIFE!
This sign warns of a danger area through electric voltage. It is situated at
all working cycles where life of the operator and other persons is
endangered. It is situated at working and operating procedures which
haveto be observedaccurately in orderto prevent endangeringofpersons
or the tester by electric voltage.
Caution !
This sign signifies danger to the tester in case of non-observance of in-
struction.
Information !
This sign signifies that a more effective and more economic use of the
tester is possible.
2.2 WARRANTY
Claims for warranty can only be asserted when the terms of warranty
included in the general terms of sale and delivery are observed.
Furthermore, the terms of the operating instructions have to be observed.
2.3 USE AS PER SPECIFICATIONS AND EXCLUSION OF
LIABILITY
The high voltage tester has to be used as per the specifications only for
the intended tests. Every use beyond is considered as not according to
the specifications. ELABO does not accept any liability for damages
resulting from this, the operator exclusively carries the risk. It is also
necessary for the use as per the specifications that the information given
in these operating instructions is observed.

9
PE-Conductor Tester 2GA27 90-2A
2. Safety regulations
Thetest systemand itscomponents havebeendevelopedandconstructed
for the application in the industrial field. According to DIN EN 55022 ITE
this unit represents a system of the class A. Neither the high voltage
tester as a whole or the single components of it may be employed in
anotherenvironment.Incaseofnon-observanceofthisinformationELABO
does not accept any liability for appearing malfunctions and damages
resulting from this.
Theseoperating instructionsandallenclosuresmust havebeenattentively
read and understood by all operators before working with the high voltage
tester. The high voltage tester has to be operated by trained and skilled
staff only.
Theunitmaynotbechangedregardingconstructionand safetytechnology.
Every change requires the express consent of ELABO.
Unauthorized modifications at the high voltage tester as well as the use of
spare parts, accessories and extra equipments which have not been
controlled and released by ELABO can have a negative influence on the
function and features of the high voltage tester. ELABO does not accept
any liability for damages resulting from this.
ELABO does not accept any liability for damages arising by non-
observance of the operating instructions or by negligence of duty of care
during the transport, installation, handling, operation, attendance and
maintenance or during repair of the unit even if these duties of care are
not particularly pointed to in the operating instructions.
2.4 GENERAL RULES OF CONDUCT AND SAFETY
REGULATIONS
The device was built according to the state of art and approved safety
regulations. Nevertheless, there might arise danger to life of the operator
orthird personsrespectively damagesatthe testeror othermaterialgoods.
Thedevice hasto beoperated inworkmanlike conditiononlyandaccording
tothe specifications underobservance of theoperatinginstructions. Faults
impairing the safety have to be cleared immediately.
The person responsible for the operation has to attend to that the staff
charged with work at the device must have read and understood the
operating instructions before commencement of work. The person
responsiblefor thedevice operationisobliged toalways operatethedevice
in perfect condition only and to instruct the service staff to use the unit as
per the specifications.
The operating instructions have to be always available at the operational
place of the device. Incomplete or illegible operating instructions have to
be replaced immediately. Of course, we are pleased to be of help to you
in this respect.
In addition to the operating instructions legal, generally valid and other
obligatoryregulations foraccident preventionand environmentalprotection
have to be observed.

10
PE-Conductor Tester 2GA27 90-2A
2. Safety regulations
2.5 PARTICULAR REFERENCES TO THE PE CONDUCTOR
TESTER
Before opening the unit pull out power supply plug!
Switching off by means of rocker switch (S1/H1) is insufficient!
The PE contact of the safety socket outlet is not connected to PE
conductor potential!
The safety socket outlet at the front panel of the test unit is not a power
supply socket outlet for consumer articles but exclusively a measuring
socket outlet for the connecting of item on tests with earth safety plugs.
The PE conductor tester is for short-term measurements only, as usual
for PE conductor measurements. Continuous operation of the instrument
can lead to damages.

11
PE-Conductor Tester 2GA27 90-2A
3. Putting into operation
3. PUTTING INTO OPERATION
3.1 TRANSPORT AND INSTALLATION
The PE conductor tester is delivered completely packed and may only be
taken out of package directly at the operational place.
The unit is designed to be operated in a suitable rack. As an option is a
housing available for application as stand-alone-unit (ELABO-accessory:
Catalogue-No. 2GA27 30-6M). The unit must not be operated outside a
rack or housing.
The operational surface has to suit the weight of the tester (6 kg!) and
provide a safe support for the unit at any time.
The environment of the testing unit must be clean, dry and dust-free.
When installing the tester pay attention that the information and safety
signs at the unit are not covered.
3.2 CONNECTION
The tester can be connected to the mains supply via a 11 pole multiple
connector (X1) located on the rear of the unit.
When inserting into the rack, the mains supply connector at the rear side
of the unit will be connected to the mains supply connector installed in the
rack. Thus, the unit is automatically connected to the power supply.
After inserting the unit into the rack it must be tightly fitted by means of the
two screws located on the front panel.
The operation with a loosely inserted
test unit is not permissible!

12
PE-Conductor Tester 2GA27 90-2A
3. Putting into operation
3.3 SETTING THE TEST UNIT PARAMETERS
Before the unit is put into operation some parameters must be adjusted.
Switch on unit with illuminated rocker switch (S1/H1). The pilot lamp
(S1/H1) lights up.
Setting of Rmax
Press push-button S4 and set the trimming potentiometer R1 to the maxi-
mal permissible resistance value in the range from 0 to 0.3 Ω. The set
value is displayed at the measuring instrument P1 (upper scale ).
Setting the test current.
The test current can be adjusted between 9 and 27 A via the adjustable
transformer T1.
In order to adjust the test current, the measuring circuit must be closed by
making a short circuit of the measuring leads.
When using a test probe (SO) the tip of the probe must be pressed onto
the terminal jack X3a.
Press push button START (S2) and push button RESETS (S3) simulta-
neously and adjust the required test current with variable transformer T1
in the range of 9 to 27 A. The test current is displayed on instrument P1
(lower scale).
If the lower limit value of the test current is undershot, a red LED V4 (test
current <) lights up. But the test can be carried out nevertheless. It should
be noted that the accuracy indicated is no longer guaranteed if the test
current falls below 5 A. There is no "Passed" indication via LED V1.
If the upper limit value "Test current" is exceeded the red LED V3 (test
current >) lights up. The test will be interrupted and can only be continued
after the push button S3 (Reset) is activated.
Setting the alarm buzzer.
The buzzer can be set inside the test unit to different modes by setting
jumpers on the subassembly PEIS200.
Work inside the test unit are to be carried out by
an electrical specialist only!
The unit has to be disconnected from the mains if
work is to be carried out inside the unit!
The presetting at works is marked with an #.

13
PE-Conductor Tester 2GA27 90-2A
3. Putting into operation
Buzzers as GO - or FAULT - signal.
B1: Jumper 1-2 > FAULT-signal
2-3 > Go-signal #
Buzzer ON or OFF.
B2: Jumper 1-2 > ON #
open > OFF
Buzzer for timer mode or Go/Fault evaluation
B5 Jumper 1-2 > Timer mode
2-3 > Fault evaluation #
The following Illustr. 3.1 shows the location of the jumper on the
subassembly.
subassemblyPEIS200
Fig. 3.1: Subassebly PEIS200 - buzzer setup
Further information for the arrangement of the jumpers take from the pin
designation assembly PEIS200 in the appendix chapt. 9.2.

14
PE-Conductor Tester 2GA27 90-2A
4 Operating modes
Fig. 4.1: Measurement principle of the PE conductor tester
PE-contact test point
12V
current
Sensor
Rx
4 OPERATING MODES
Before starting of the measuring operation the adjustments must be car-
ried out according to chap. 3.3.
4.1 MEASURING PRINCIPLE
Fig. 4.1 shows the measuring principle of the PE conductor tester.
For the measurement a test current is taken from an AC source with a no-
load voltage of 12 V. The amount of the test current conforms with the
valid VDE - instruction, e.g. 1.5 fold rated current of the item on test or 25
A, according to which value is higher.
The current is conducted from the PE terminal of the equipment‘s plug
successively to each touchable metal part.
From the current and the voltage drop the resistance is determined.
The instrument can be used for tests with or without safety plug socket as
well as for tests with a test probe.
Use exclusively safety checked leads for the connection of the test
object to the measuring instrument !
Use never damaged or defective leads or power supply cable for
the connection of the test object !
Check the condition of the leads before each measurement !
Attention: The test current is not electronically stabilized, so that at
changing to another item on test the current must be checked and if
necessary, reset.
The result of the protective conductor test will be displayed via the LED
V1 and V2. The green LED V1 signals a faultless test while the red LED
V2 willdisplay a fault. The buzzersupports according tothe setting (chap.
3.3) the display.

15
PE-Conductor Tester 2GA27 90-2A
4 Operating modes
Rx
4.2 PE CONDUCTOR TEST WITHOUT THREE-WIRE PLUG
Fig. 4.2 shows the test arrangement for this operating mode.
For the connection of the item on test to the terminals of the instrument
use connecting leads with a cable cross-section of at least 2.5 mm² !
Connect the PE conductor of the item on test with the connecting terminal
(X3a) and the safety lab terminal (sensor) (X4a). Connect the cable from
connecting terminal (X3) to the test point. Connect a sensor cable from
the safety lab terminal (X4) to the test point.
Start the measurement by means of the start push-button (S2) or via
interface start.
testobject
PE-contact
test point
Fig. 4.2: Test arrangement for measurements without safety plug

16
PE-Conductor Tester 2GA27 90-2A
4 Operating modes
Rx
testobject
PE-contact
test point
4.3 TEST VIA THREE-WIRE PLUG
Fig. 4.3 shows the test arrangement for the measurement with a three
wire plug.
Use a power supply cable with a cable cross-section of at least 1 mm² for
the connection of the item on test to the socket outlet of the instrument!
Put the power supply cable of the item on test into the socket outlet (X2).
Connect the cable from the connecting terminal (X3) to the test object.
Connect sensor cable from safety lab terminal (X4) to the test point.
Start the measurement via the start push-button (S2).
Fig. 4.3: Test arrangement for measurements with safety plug

17
PE-Conductor Tester 2GA27 90-2A
4 Operating modes
Rx
testobject
PE-contact
test point
4.4 TEST WITH TEST PROBE (SO)
For a simpler operation the measuring instrument can be operated with a
test probe. (ELABO - accessory: Catalogue-No. 2GA27 94-4S).
Fig. 4.4 shows the test arrangement with a test probe and without a three
wire plug.
Put the 5 pole diode plug of the test probe into the diode socket (X5) and
secure by means of screwing against unintentional loosening. Put the 4
mm plug of the test probe into the socket X3.
For operation with a test probe the adjustment of the test current can be
achieved by pressing the tip of the test probe against the PE-conductor
terminal of the test socket outlet and simultaneously operating of the RE-
SET push-button (S3).
With the test probe are measurements with and without three-wire plugs
possible, as described under chap. 4.2 and 4.3.
Consider, when connecting, the references mentioned in chap. 4.2 and
4.3.
Connect the test specimen to the socket outlet (X2) or to the terminals
(X3a) and (X4a).
The tip of the test probe must be pushed-in completely at the test point of
the test specimen.
To prevent contacts and measuring points of the specimen from charring,
the test current will not be applied before the spring-loaded tip of the test
probe is pushed-in completely.
Fig. 4.4: Test arrangement for measurements with test probe

18
PE-Conductor Tester 2GA27 90-2A
4 Operating modes
4.5 OPERATION IN COMBINATION WITH AN INSULATION
TESTER
Together with the ELABO-Insulation tester (Catalog-No. 2GA27 90-2E) a
simultaneous measurement of PE conductor and insulation resistance is
possible.
Consider for the connection of the item on test absolutely
the references given in chap. 4.1 - 4.4 !
For the combination measurement the item on test must be contacted
always at the PE conductor tester. Otherwise the insulation tester can be
damaged.
The actuation of the start push-button at the PE conductor tester trig-
gersthe protectiveconductor andinsulation resistancemeasurement.
An actuation of the start push-button at the insulation tester, triggers the
insulation test only.
If the protective conductor test proceeds faultlessly, the insulation test is
started automatically. A fault at the protective conductor test will give a
„Fault“ alarm at the PE conductor tester, the insulation test is not started.
The buzzer in the PE conductor tester must be in position „OFF“ during
the combination operation (see appendix). If possible the interface should
be operated floating.

19
PE-Conductor Tester 2GA27 90-2A
5 Interface
5 OPERATION VIA INTERFACE
The PE conductor tester disposes of an interface which enables the ex-
ternal control and evaluation.
The signal level of the input should be between 5 V and 24 V. The con-
nections a and c of 64 pole terminal strip (X7) are linked.
The operating and display elements on the front panel have during the
external control their full function.
The connections of the test current and the sensor cable are in parallel to
the front panel terminals during operation via the external interface. It is
recommended to operate the interface control isolated, since the ground
potential of the interface is not electrical isolated from the test signal.
5.1 PIN ASSIGNMENT OF INTERFACE TERMINAL STRIP (X7)
In the following the pin assignment of the 64 pole terminal strip (X7) is
described. The terminal strip corresponds to DIN 41612, Type C).
Attention: The control In/Outputs (Pin 2, 4, 6, 8, 9, 10, 12, 14) as well as
the analog outputs (Pin 25, 27) at the 64-pole interface (X7) have a fixed
potential to the test current.
If for instance, the control is carried out by a grounded PLC via the before
mentioned Pins then the current source which generates the test current
is also grounded. Thus, a falsification of the test results becomes possi-
ble.
Pin 2 Good/Fault.
Open collector of transistor BD 675 for
„Good/Fault“ identification:
Transistor conductive = GOOD
Transistor blocking = FAULT
Pin 4, 9 and 14 GND
Reference potential of all inputs and outputs except
for fault relay (Pin 16, 18, 20, 22).
Pin 6 Measuring L.
Connection of Pin 6 to GND acts like operating key
"Start" (S2).
If possible use floating contacts.
Pin 8 Measuring H.
Applying of an external DC of 5 V to 24 V, acts like
operating key "Start" (S2)

20
PE-Conductor Tester 2GA27 90-2A
5 Interface
Pin 10 Reset L.
Connection of Pin 10 with GND acts like operating the
key RESET (S3).
Pin 12 Reset H.
Applying of an external DC voltage of 5 V to 24 V, acts
like operating "Reset" (S3)
Pin 16, 18 Fault I
Floating relay output for identifying off-limit test
currents.
No connection between pins 16 and 18 in the event of a
fault (contact open).
Pin 20, 22 Fault R
Floating relay output for identifying over-ranging
resistance values = red "Fault" LED (V2).
No connection between pins 20 and 22 in the event of a
fault (contact open).
Pin 25 I
Analog DC signal as a function of the test current:
0 to 30 A AC = 0 to 10 V DC, measured against GND.
Maximum loading capacity 5 mA.
Pin 27 R
Analog DC signal as a function of the resistance:
0. . .0.3 Ω= 0 to 10 V DC, measured against GND.
Maximum loading capacity 5 mA.
Pin 29 Sensor left.
Sensor lead, parallel to left-hand sensor jack (X4).
Pin 31 Sensor right.
Sensor lead, parallel to right-hand sensor jack (X4).