IFM DF12 Series User manual

Installation instructions
Electronic circuit breakers, standard
for the 24 V DC secondary circuit
DF11xx
DF12xx
80278885 / 00 10 / 2018
UK

2
1 Preliminary note
This document applies to the DF11xx supply modules and the DF12xx circuit
protection modules.
Read this document before use to familiarise yourself with operating conditions,
installation and operation. Keep this document during the entire duration of use of
the device.
WARNING
Adhere to the warning notes and safety instructions (→ 2 Safety instructions).
The devices are not suitable for battery-backed applications.
2 Safety instructions
• The devices are intended for use with a 24 V DC safety extra-low voltage.
• A wrong connection to voltage which is higher and/or not safely isolated may
lead to damage or conditions which are dangerous to life.
• Use the supply module only with the matching circuit protection modules.
• Observe the technical data of the circuit protection modules used.
• The devices must be installed, connected and put into operation by a qualified
electrician.
• Adhere to the national regulations regarding the installation and selection of
cables.
• Do not mount the devices and do not actuate the contact levers while live.
• Supply the devices with energy only after they have been properly installed.
• After triggering a circuit protection module and before power on again, remove
the cause of triggering (short circuit or overload).
• Check the devices for damage prior to installation. Faulty devices must not be
used.
• In case of malfunction of the unit or queries, please contact the manufacturer.
Any tampering with the device can seriously affect the safety of operators and
machinery.This is not permitted and leads to the exclusion of any liability and
warranty claims.

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UK
3 Installation
►Mount the devices on a 35 mm rail.
1
2
3
4
Example DF12xx circuit protection module
1: rail
2: contact lever
3: installation area
4: operating area
4 Electrical connection
►Dimension cables according to input and output current.
►Insert wires directly into the terminals as shown on the device label.
Art. no. Terminals Potential Cross-
section
[mm²]
Stripping
length
[mm]
DF11xx 24 V DC supply 0.5...10 18
0 V 0.14...2.5 8...10
13-14 NO contacts 0.14...2.5 8...10
DF12xx O1 or O1/O2 current outputs 0.14...2.5 8...10
To disconnect press the orange pusher using a suitable tool.
To open the push-in terminals IO-Link use a 2 mm wide micro screwdriver.
As soon as the supply module is supplied with voltage, the device closes
the contacts connected to terminals 13 and 14. If a fault occurs at min. one
of the connected channels, the device opens the contacts again.

4
5 Operating and display elements
3
1
2
4
3
1
2
4
Example DF11xx supply module
1: panel for labelling
2: push-in terminals switching output 13/14
3: push-in terminal 0 V
4: push-in terminal 24 V DC
Example DF12xx circuit protection module
1: panel for labelling
2: ON/OFF/reset button and status LED
(channel 2)
3: ON/OFF/reset button and status LED
(channel 1)
4: push-in terminals outputs 1/2
5.1 DF12xx circuit protection modules
The different operating states of the circuit protection modules are indicated by
LEDs.
—off missing operating voltage,
error in initialisation or
channel switched off via button
off
Green on channel switched on, no fault on
Green/
orange
flashing load current limit reached on
Orange on overload or short circuit until discon-
nection
on
channel switched off off
Red on triggering via short circuit or overload off
undervoltage in ON status with auto-
matic switching on again

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5.2 Interrogation of module to confirm the set nominal current
Only for circuit protection modules with adjustable nominal current.
►Press the ON/OFF/reset button of the requested channel between 2 and 5
seconds.
> The status LED of the selected channel flashes red once.
> The status LED flashes orange to display the set nominal current. The LED
Flashes red once to confirm completion of the cycle. The LED flashes orange,
once or multiple times, in accordance with nominal current setting in amperes
(orange flashing once = 1 A; orange flashing twice = 2 A; etc.).
> The set nominal current is displayed five times. After 5 cycles the display
changes to the current operating status.To interrupt/stop the interrogation cycle,
and return to normal status indication mode, press the ON/OFF/reset button of
the requested channel at any time.
5.3 Setting of the nominal current
Only for circuit protection modules with adjustable nominal current.
►Press the ON/OFF/reset button of the requested channel min. 5 seconds.
> The status LED of the selected channel flashes red once.
> The status LED slowly flashes green, max. 10 times, then red once.
►Press the ON/OFF/reset button of this channel when the LED signals the
requested nominal current value (after the first time flashing green = 1 A; after
the second time flashing green = 2 A; etc.).
> The selected nominal current is set for this channel.
> Display changes to the current operating status.

6
6 Technical data
Art. no.
DF1100
DF1208 DF1210 DF1212 DF1214 DF1216 DF1220
Supply module ● -
Circuit protection
module
-●
Interface -
Number of circuit
protection modules
-≤ 10 per supply module
Electrical data
Input voltage [V] 18...30 DC (SELV/PELV)
Nominal voltage [V] 24 DC
NEC Class 2 - - - ● ● - -
Input current
(= max. total current)
[A] 40 -
Number of channels - 1 2
Nominal current IN
fail-safe IN
[A] - 8
(8)
10
(10)
2
(2)
4
(4)
6
(6.3)
1...10
(16)
Mechanical data
Installation rail TH35 (to EN 60715)
Device width [mm] 12.5
Ambient temperature [°C] -25...60
Storage temperature [°C] -40...70
Protection rating
(→ 3 Installation)
IP 30 (installation area)
IP 20 (operating area)
Electrical connection
Type push-in terminals, contact lever/strip
● = applicable
Data sheets are available at:www.ifm.com
When read with a smartphone, the printed QR codes directly lead to the data
sheet and more information.

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UK
6.1 Temperature factor / continuous current rating
The time-current characteristic curve depends on the ambient temperature. To
determine the max. permitted load current multiply the nominal device current by
the temperature factor taking into consideration the series connection.
Ambient temperature [°C] 0 10 23 40 50 60
Temperature factor 1 1 1 0.95 0.90 0.85
With series installation the nominal device current can be max. 80% or has to be
overdimensioned accordingly. With increased temperature the load current war-
ning limit "warning limit typ. 0.8 x IN" is reduced by the temperature factor.
6.2 Fail-safe element
The load circuits are additionally protected by the circuit protection modules that
are equipped with a fail-safe element (integrated fuse). The fail-safe element is
adapted to the nominal current INof the respective circuit protection module and
the respective wire cross-sections.