Operating Instructions
Transponder-Coded Safety Switch CTM-I2-BP/BR
14
(translation of the original operating instructions) MAN20001437-01-10/21
9.1.
Notes about
Important!
Ì
This device is intended to be used with a Class 2 power source in accordance with UL1310.
As an alternative an LV/C (Limited Voltage/Current) power source with the following properties can
be used:
This device shall be used with a suitable isolating source in conjunction with a fuse in accordance
with UL248. The fuse shall be rated max. 3.3 A and be installed in the max. 30 V DC power supply
to the device in order to limit the available current to comply with the UL requirements. Please note
possibly lower connection ratings for your device (refer to the technical data).
Ì
For use and application as per the requirements of UL
1)
a connecting cable listed under the UL
category code CYJV/7, min. 24 AWG, min. 80 °C, must be used.
1) Note on the scope of the UL approval: the devices have been tested as per the requirements of UL508 and CSA/ C22.2 no. 14 (protection against electric shock
and fire).
9.2.
Safety in case of faults
Ì
The operating voltage UB and the control input IMP are reverse polarity protected.
Ì
The safety outputs FO1A/FO1B are short circuit-proof.
Ì
A short circuit between FO1A and FO1B is detected by the switch.
Ì
A short circuit in the cable can be excluded by laying the cable with protection.
9.3.
Fuse protection for power supply
The power supply must be provided with fuse protection depending on the number of switches and the current required for
the outputs. The following rules apply:
Max. current consumption of an individual switch I
max
I
max
= I
UB
+ I
FO1A
+
FO1B
+ I
OX
+ I
IMP
I
UB
= Switch operating current (max. 500 mA)
I
OX
= Load current of monitoring outputs (max. 50 mA per monitoring output)
I
FO1A+FO1B
= Load current of safety outputs FO1A + FO1B (2 x max. 150 mA)
Important!
If there are further monitoring outputs, their load current must be taken into account.
Max. current consumption of a switch chain
Σ
I
max
Σ
I
max
= I
FO1A+FO1B
+ n x (I
UB
+ I
OX
)
n = Number of connected switches
9.4.
Requirements for connecting cables
CAUTION
Risk of damage to equipment or malfunctions as a result of incorrect connecting cables.
Ì
Use connection components and connecting cables from EUCHNER.
Ì
On the use of other connection components, the requirements in the following table apply.
EUCHNER provides no warranty for safe function in case of failure to comply with these require-
ments.
