ENTES EPM-4A, EPM-4C, EPM-4D, EPM-4P User guide

Selection of Current Transformer Primary Value (For EPM-4A, 4C, 4D and 4P)

AMMETER
EPM-4A / EPM-4C / EPM-4D / EPM-4P

EPM-4A (Ammeter with Demand) : With additional features to EPM-4D, current transformer ratio is selected

as drCt, CT-25 current transformer which can measure between 0,07 A - 200 A must be used.

SET

SET

SET

Press SET button for 3 sec.

Press UP or DOWN button until Ctr is
displayed.

Press SET button.

Press UP or DOWN button until requested
value is displayed. (If buttons are pressed
continuously, displayed value is changed
quickly).
Press SET button to save.

5000

Setting of Demand Time (For EPM-4A, 4C, 4D

and 4P

)

SET

SET

SET

Press SET button for 3 sec.

Press UP or DOWN button until dE t is
displayed.

Press SET button.
Press UP or DOWN button until requested

value is displayed. (If buttons are pressed
continuously, displayed value is changed
quickly).

Press SET button to save.

0015

0020

Setting of High Setpoint Value (For EPM-4C

and 4P

)

SET

SET

SET

Press SET button for 3 sec.

Press UP or DOWN button until SP h is
displayed.

Press SET button.
Press UP or DOWN button until requested

value is displayed. (If buttons are pressed
continuously, displayed value is changed
quickly).

Press SET button to save.

2500

2750

Setting of Low Setpoint Value (For EPM-4C

and 4P

)

SET

SET

SET

Press SET button for 3 sec.

Press UP or DOWN button until SP L is
displayed.

Press SET button.

Press SET button to save.

2500

2250

Press UP or DOWN button until requested
value is displayed. (If buttons are pressed
continuously, displayed value is changed
quickly).

Setting of Hysteresis Value (For EPM-4C and 4P)

SET

SET

SET

Press SET button for 3 sec.

Press UP or DOWN button until hYS is
displayed.

Press SET button.

Press UP or DOWN button until requested
value is displayed. (If buttons are pressed
continuously, displayed value is changed
quickly).

Press SET button to save.

5.000

6.000

Setting of On Time Value (For EPM-4C and

4P

)

SET

SET

SET

Press SET button for 3 sec.

Press UP or DOWN button until on t is
displayed.

Press SET button.

Press UP or DOWN button until requested
value is displayed. (If buttons are pressed
continuously, displayed value is changed
quickly).

Press SET button to save.

Setting of Off Time Value (For EPM-4C and

4P

)

SET

SET

SET

Press SET button for 3 sec.

Press UP or DOWN button until oF t is
displayed.

Press SET button.

Press UP or DOWN button until requested
value is displayed. (If buttons are pressed
continuously, displayed value is changed
quickly).

Press SET button to save.

Setting of Start Time Value (For EPM-4C and

4P

)

SET

SET

SET

Press SET button for 3 sec.

Press UP or DOWN button until Strt is
displayed.

Press SET button.

Press UP or DOWN button until requested
value is displayed. (If buttons are pressed
continuously, displayed value is changed
quickly).

Press SET button to save.

Setting of Auto Start Mode (For EPM-4C and

4P

)

SET

SET

SET

Press SET button for 3 sec.

Press UP or DOWN button until AUto is
displayed.

Press SET button.

Press UP or DOWN button until requested
value is displayed.

Press SET button to save.

Setting of Instant Tripping Function (For EPM-4C and

4P

)

SET

SET

SET

Press SET button for 3 sec.

Press UP or DOWN button until trP is
displayed.

Press SET button.

Press UP or DOWN button until
requested value is displayed.

Press SET button to save.

.

Setting of Turn Number (For EPM-4A, 4C and 4P)

SET

SET

SET

Press SET button for 3 sec.

Press UP or DOWN button until trn is
displayed.

Press SET button.

Press UP or DOWN button until requested
value is displayed.

Press SET button to save.

0001

0010

MEASUREMENT RANGES

EPM-4D (Ammeter with Demand) : EPM-4D is designed to measure RMS value of AC current which flows

from the line and saving the instant and average demands. The current transformer ratio can be set between 5/5A
and 10000/5A by the buttons on the panel.

(drCt is not
available for
EPM-4D.)
(drCt valid when
CT-25 is used)

1

EPM-4C (Ammeter with Setpoint) : EPM-4C measures the RMS value of AC current which flows from the

line. If the measured AC current is over the high setpoint or it is under the low setpoint, output relay is switched
on at the end of adjusted time delay. Also, it includes all functions of EPM-4A.

EPM-4P (Ammeter with Pick-Up) : In addition to EPM-4C, it also has Pick-Up relay. If the measured AC

current is over the high setpoint or it is under the low setpoint, Pick-Up relay is switched on without delay. If current
value returns within preset limits before the end of programmed delay time, Pick-Up relay is switched off without
delay.

* Important Notice: The secondary value of current transformer must be limited at 5A.

Turn ( ) : Turn number of cable, which passes inside of CT-25 is selected in this menu. This number can

be selected between 1 and 10. If only drCt is selected under Ctr menu, turn number will be activated.

Demand Time ( ) : Device records measured demand and maximum demand values. Demand is the

average current value measured in demand time. Maximum demand is the maximum average current value
measured in demand time. Maximum demand value remains stored, even if the power supply is off and demand
value becomes 0 (zero).

Setpoint (s p v e s p

): When the AC current which flows through the device is over the high setpoint

value or it is under the low setpoint value, the output relay is switched on in order to generate an error signal at
the end of programmed delay time. If the AC current value returns within preset limits, before the end of the delay
time, the relay resets itself and no tripping occurs.

Latch Function ( ) : Latch function is used to select the output relay operation mode. Either oF

or on position may be selected.
At position oF: If the current value returns to preset limits, output relay is switched off.
At position on: Even if the current value returns to preset limits, output relay remains switched on and
switches off only by pressing the Set button.

Instant Tripping ( ) : If the AC current value is over the1,5 times of setting value or it is under the 0,5

times of setting value, the output relay is switched on without any delay time. This function is user-selectable.

Start Time Delay ( ): When the current starts to flow initially, the setpoint values are ignored for the

determined time. If auto start mode is activated, after the AC current is cutted, the device returns into its initial
state.

Automatic Start Mode ( ): If this function is disabled (off), start-up delay (Strt) is activated only when

initial current is applied to the measurement input of device. However, when this function is enabled (on), if
measured current value decreases to 0 (zero) value and increases again, start-up delay is activated.

Note : If the current on the measurement input of the device is over 6 A or measurement according to entered
primary value of current transformer is over 9999 A, there will be hý on the display.

Example: If a current transformer which has a ratio of 80/5 A is used,
current transformer primary value is entered as 80.

* Please check the device label for proper value.
* Different supply voltages are adjustable upon request.

A3921/Rev.5

AMMETER
EPM-4A / EPM-4C / EPM-4D / EPM-4P

Pcs per Package : 16 Pcs (for PR 18)
Package Weight : 5 kg
Pcs per Package : 12 Pcs (for PR 25)
Package Weight : 4,2 kg
Pcs per Package : 20 Pcs (for PR 20)
Package Weight : 5.5 kg

Packaging Information

Programming of Contact Situation (For EPM-4C and

4P

)

SET

SET

Press SET button for 3 sec.

Press UP or DOWN button until oUt is
displayed.

Press SET button.

Press UP or DOWN button until requested
value is displayed.

Press SET button to save.

Dimensions

c

SET

Precautions For Installation and Safe Use

Failure to follow below instructions will result in death or serious injury.
Disconnect all power before working on equipment.
When the device is connected to the network, do not remove the front panel.
Do not try to clean the device with solvent or the like. Only clean the device with a
dried cloth.
Verify correct terminal connections when wiring.
Electrical equipment should be serviced only by your compedent seller. No responsibility
is assured by the manufacturer or any of its subsidiaries for any consequences arising
out of the use of this material.
Only for rack panel mounting.

Warning :

a) A switch or circuit breaker must be connected between the network and the auxiliary
supply input of device.
b) Connected switch or circuit breaker must be in close proximity to the device.
c) Connected switch or circuit breaker must be marked as the disconnecting device

for the equipment.
d) The type of the used fuse must be FF type and the current of the used fuse must be 1A.
e) No need of a vantilator in the installation area
f) Practical user manuel must be put on the panel.

Connection Diagrams

Deleting the Demand Values
(For EPM-4A,

4C, 4D

and 4P)

Press UP and DOWN buttons at the same time

Displaying of Max. Demand (For EPM-4A,

4C, 4D

and 4P)

Press and hold the UP button to see
the max. demand value

Displaying of Demand (For EPM-4A

, 4C, 4D

and 4P)

Press and hold the DOWN button to see
the demand value.

Escaping the Set Menu (For EPM-4A, 4C, 4D and 4P)

SET

If you do not request to change any
adjustment in the menu;

Press UP or DOWN button until ESC is
displayed.

Press SET button.

Setting of Latch Function (For EPM-4C and

4P

)

SET

SET

SET

Press SET button for 3 sec.

Press UP or DOWN button until LAtC is
displayed.

Press SET button.

Press UP or DOWN button until requested
value is displayed.

Press SET button to save.

761A43

0,5m

CT-25

k l
K L

l

in

EPM-4A

5

Un

Factory Settings :

Ctr = 0005
trn = 0001
dE t = 0015
SP h = 4.000

SPL = 0.250
hYS = 0.100
on t = 010.0

trP = oF
LAtC= oF
oUt = no

oF t = 010.0
Strt = 006.0
AUto= oF

Technical Data

Operating Voltage (Un),*
Operating Range (DU) : Please look at labels on the device.
Operating Frequency (f) : 45-65 Hz
Accuracy : 1% ±1 digit [(10%-100%) full scale]
Measuring Input (Iin) : 0,05-5,5 A

0,07-200 A (with CT-25 (for EPM-4A, 4C and 4P))

Measuring Range : 0,05 -10.000 A (with X5 CT)

0,07-200 A (with CT-25 (for EPM-4A, 4C and 4P))
Current Transformer Ratio (Ct) : 5...10000 / 5 A and drCt (for EPM-4A, 4C and 4P)
Power Consumption(P

cons

) : <4 VA
Burden : <1 VA
Output Contact : 5 A, 250 V, 1250 VA (Resistive)

(for EPM-4C and 4P)

Pick-Up Contact : 5 A, 250 V, 1250 VA (Resistive)

(for EPM-4P)

Ins. Tripping : >1,5 x SP H or <0,5 x SP L

(for EPM-4C and 4P)
Hysteresis : 0-0,5 x Full scale (for EPM-4C, 4P)
Delay Times : 0,0 - 999,9 sec. (for EPM-4C, 4P)
Demand Time (Average) :1-60 min.
Enclosure : Non-flammable
Equipment Protection : Double Insulation ( ),

Measuring Category III
Ambient Temperature : -5 OC; +50 OC
Degree of Protection : IP 40 (Front Panel)
Wire Thickness : 2,5mm2 (for terminal block)

16 mm

2

(Measuring Input Wire Thickness

for CT-25)
Installations : Flush mounting with rear terminals
Dimensions : Type PR 18, PR 25, PR 20
Weight : 0,31 kg (for PR 18)

: 0,35 kg (for PR 25)

: 0,28 kg (for PR 20)

The Area Measurements on The Control Panel

Control Panel Cut Out

65.5mm

82.5mm
75mm

50mm

TYPE PR 18

WALL

42mm

66mm

66mm

TYPE PR 18 (72x72)

91mm

91mm

TYPE PR 25 (96x96)

TYPE PR 25 (96x96)

96mm

96mm

WALL

90mm

46mm
40mm

50mm

TYPE PR 25

TYPE PR 18 (72x72)

72mm

72mm

48mm

96mm

TYPE PR 20 (48x96)

TYPE PR 20 (48x96)

91mm

44mm

43mm

63mm
54 mm

50mm

TYPE PR 20

WALL

1A

0,5m

k l
K L

l

in

EPM-4A

761A53

0,5m

Output

Contact

k l
K L

l

in

EPM-4C

CT-25 CT-25

41 27653 4

Un Un

1A

k l
K L

l

in

EPM-4D

7653

Un

981A75

0,5m

Output

Contact

k l
K L

l

in

EPM-4C

CT-25

63 4

Un

981A75

0,5m

Output

Contact

k l
K L

l

in

EPM-4P

CT-25

63 4

Un

1 2

Pick-up

981A75

k l

K L

l

in

EPM-4D

Un

76

1A

43

0,5m

CT-25

k l

K L

l

in

EPM-4C

5

89

Output

Contact

Un

761A43

0,5m

CT-25

k l
K L

l

in

EPM-4P

Pick-Up

1 2 5

89

Output

Contact

Un

76

1A

3

k l
K L

l

in

EPM-4D

5

Un

2

PR 25

(96x96)

PR 25

(96x96)

PR 25

(96x96)

PR 25

(96x96)

PR 18

(72x72)

PR 20

(48x96)

PR 18

(72x72)

PR 18

(72x72)

PR 20

(48x96)

PR 20

(48x96)

If current

transformer is

selected as drCt

If current

transformer is

selected as
0005-A000

Mesaurement

Input

(I

in

)

If current

transformer is

selected as drCt

If current

transformer is

selected as
0005-A000

Mesaurement

Input

(I

in

)

If current

transformer is

selected as

0005-A000

If current

transformer is

selected as drCt

If current

transformer is

selected as
0005-A000

Mesaurement

Input

(I

in

)

If current

transformer is

selected as

0005-A000

If current

transformer is

selected as drCt

If current

transformer is

selected as
0005-A000

Mesaurement

Input

(I

in

)

If current

transformer is

selected as drCt

If current

transformer is

selected as

0005-A000

Mesaurement

Input

(I

in

)

If current

transformer is

selected as drCt

If current

transformer is

selected as
0005-A000

Mesaurement

Input

(I

in

)

If current

transformer is

selected as drCt

If current

transformer is

selected as
0005-A000

Mesaurement

Input

(I

in

)

If current

transformer is

selected as
0005-A000

43mm

16mm

15.5mm

500mm

2x0,35mm

2

44.5mm

43mm

CT-25