Main Components of a PLC System: Complete Guide for Engineers
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The Siemens 6EP4436-8XB00-0CY0 is a SITOP CNX8600 expansion module that adds four isolated, individually adjustable 24 V DC outputs at 5 A each to a SITOP PSU8600 power supply, without increasing the PSU8600 system's total output power. Each output is adjustable from 4 to 28 V via potentiometer or the PROFINET interface and reports its own operating state on a dedicated LED.
Each of the four outputs can be trimmed independently from 4 to 28 V by potentiometer or over the PROFINET interface, so mixed-voltage loads can be served from one CNX8600 instead of separate supplies. The overload threshold is adjustable per output from 0.5 to 5 A through the same two access methods, letting each trip point be matched to its actual downstream load rather than left at the full 5 A rating. Because the module adds outputs without increasing the PSU8600 system's total power budget, the base PSU8600 unit has to be sized for the combined load before a CNX8600 is added for extra connection points.
| product brand name | SITOP |
|---|---|
| product type designation | CNX8600 |
| product designation | Extension module SITOP CNX8600 |
| type of current supply | 4x 5 A |
| voltage curve at output | Controlled, isolated DC voltage |
|---|---|
| product function output voltage controlled | Yes |
| product function output voltage stabilized | Yes |
| number of outputs | 4 |
| output voltage at DC rated value | 24 V |
| output voltage: at output 1 at DC rated value | 24 V |
| output voltage: at output 2 at DC rated value | 24 V |
| output voltage: at output 3 at DC rated value | 24 V |
| output voltage: at output 4 at DC rated value | 24 V |
| output voltage: at output 1 at DC | 5 ... 24 V |
| output voltage: at output 2 at DC | 5 ... 24 |
| output voltage: at output 3 at DC | 5 ... 24 |
| output voltage: at output 4 at DC | 5 ... 24 |
| output voltage adjustable | Yes; via potentiometer or IE/PN interface |
| adjustable output voltage | 4 ... 28 V; Derating > 24 V: 4%/V; max. 120 W per output |
| relative overall tolerance of the voltage | 3% |
| relative control precision of the output voltage: on slow fluctuation of input voltage | 0.2 % |
| residual ripple: maximum | 100 mV |
| voltage peak: maximum | 200 mV |
| display version for normal operation | 3-color LED for operating state module; 3-color LED per output for operating state output |
| type of signal at output | Relay contact (changeover contact, contact current capacity DC 60 V/0.3 A) for "Operating state OK" at power supply unit PSU8600 |
| behavior of the output voltage when switching on | No overshoot of Vout (soft start) |
| response delay maximum | 1.5 s; Without on-delay of the outputs |
| type of outputs connection | simultaneous switch-on of all outputs after device power-up or delay time of 25 ms, 100 ms, or "load-optimized" for sequential switch-on of the outputs via DIP switch to PSU8600 power supply configurable |
| voltage increase time of the output voltage: maximum | 500 ms |
| output current: rated value | 20 A |
| output current: per output | 5 A |
| output current: at output 1 rated value | 5 A |
| output current: at output 2 rated value | 5 A |
| output current: at output 3 rated value | 5 A |
| output current: at output 4 rated value | 5 A |
| output current: rated range | 0 ... 20 A; No increase in the maximum output power of the overall system SITOP PSU8600 via the expansion module SITOP CNX8600 possible |
| supplied active power typical | 480 W |
| parallel switching of outputs | No |
| bridging of equipment | No |
| efficiency in percent | 97 % |
|---|---|
| power loss [W]: at rated output voltage for rated value of the output current typical | 15 W |
| Part number | 6EP4436-8XB00-0CY0 |
|---|---|
| Type designation | CNX8600 |
| Brand | Siemens |
| Condition | New, factory sealed |
| Source | Siemens and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Active, in production |
| EAN | 4025515154488 |
| ETIM class | EC002540 |
| eCl@ss | 27040701 |
| relative control precision of the output voltage with rapid fluctuation of the input voltage by +/- 15% typical | 0.1 % |
|---|---|
| relative control precision of the output voltage load step of resistive load 50/100/50 % typical | 0.4 % |
| setting time: maximum | 10 ms |
| design of the overvoltage protection | max. 35 V (max. 500 ms) |
|---|---|
| property of the output short-circuit proof | Yes |
| design of short-circuit protection | electronic overload cut-off |
| adjustable current response value current of the current-dependent overload release | 0.5 ... 5 A |
| type of response value setting | via potentiometer or IE/PN interface |
| switching characteristic: of the excess current | Ia >1.0...<1.5 x Ia threshold for 5 s permissible; Ia limit (= 1.5 x Ia threshold) for 200 ms permissible |
| display version for overload and short circuit | 3-color LED for operating state module; 3-color LED per output for operating state output |
| design of the reset device/resetting mechanism | via sensor per output or IE/PN interface |
| remote reset function | non-isolated 24 V input (signal level "high" at > 15 V) at power supply PSU8600 |
| product function communication function | Yes |
|---|---|
| design of the interface | Ethernet/PROFINET via power supply unit PSU8600 |
| electrical separation between input and output | Yes |
|---|---|
| galvanic isolation | Output voltage: SELV, ES1 (IEC 62368-1), DVC As (IEC 61204-7) |
| operating resource protection class | Class III |
| protection class IP | IP20 |
| standard: for emitted interference | EN 55022 Class B |
|---|---|
| standard: for interference immunity | EN 61000-6-2 |
| certificate of suitability: CE marking | Yes |
|---|---|
| certificate of suitability: UL approval | Yes; cULus-Listed (UL 508, CSA C22.2 No. 107.1), File E197259 |
| certificate of suitability: EAC approval | Yes |
| certificate of suitability: NEC Class 2 | No |
| certificate of suitability: SEMI F47 | Yes |
| type of certification: CB-certificate | Yes |
| MTBF at 40 °C | 358 372 h |
| certificate of suitability: IECEx | No |
|---|---|
| certificate of suitability: ATEX | No |
| certificate of suitability: ULhazloc approval | No |
| certificate of suitability: FM registration | No |
| shipbuilding approval | Yes |
|---|---|
| Marine classification association: American Bureau of Shipping Europe Ltd. (ABS) | Yes |
| Marine classification association: French marine classification society (BV) | No |
| Marine classification association: Det Norske Veritas (DNV) | Yes |
| Marine classification association: Lloyds Register of Shipping (LRS) | No |
| Environmental Product Declaration | Yes |
|---|---|
| global warming potential [CO2 eq]: total | 462.7 kg |
| global warming potential [CO2 eq]: during manufacturing | 50.2 kg |
| global warming potential [CO2 eq]: during operation | 411 kg |
| global warming potential [CO2 eq]: after end of life | 1.17 kg |
| ambient temperature: during operation | -25 ... +60 °C; with natural convection |
|---|---|
| ambient temperature: during transport | -40 ... +85 °C |
| ambient temperature: during storage | -40 ... +85 °C |
| environmental category according to IEC 60721 | Climate class 3K3, 5 ... 95% no condensation |
| type of electrical connection | Plug-in terminals with screwed connection |
|---|---|
| at output | 1, 2, 3, 4: Two plug-in terminals (1, 2 and 3, 4) with 2 screwed connections each for 0.2 ... 2.5 mm2; Ground: Plug-in terminal with 3 screwed connections for 0.2 ... 2.5 mm2 |
| removable terminal at output | Yes |
| suitability for interaction modular system | Yes |
| type of connection to system components | Via integrated connector |
| width × height × depth of the enclosure | 60 × 125 × 150 mm |
|---|---|
| installation width × mounting height | 60 mm × 225 mm |
| required spacing: top | 50 mm |
| required spacing: bottom | 50 mm |
| required spacing: left | 0 mm |
| required spacing: right | 0 mm |
| fastening method | Snaps onto DIN rail EN 60715 35x15 |
| DIN-rail mounting | Yes |
| S7 rail mounting | No |
| wall mounting | No |
| housing can be lined up | Yes |
| mechanical accessories | Device identification label 20 mm × 7 mm, TI-grey 3RT2900-1SB20 |
|---|
| eClass | 16 27-04-07-01 |
|---|---|
| ETIM | 10 EC002540 |
| IDEA | 4 4130 |
| UNSPSC | 15 39-12-10-04 |
| Net weight | 1.15 kg |
|---|---|
| Country of origin | Romania |
| Shipping weight | 1.65 kg |
| Ships from | Türkiye |
| Dispatch | — |
| Stock | On request |
Source: manufacturer data · Last verified: 01 Nov 2026
No documents are on file for this part yet.
Ask us for the datasheetThe rated current of CNX8600 is 20 A.
The rated motor power of CNX8600 is 0.48 kW.
The tariff (HS) code on file for CNX8600 is 85049090.
The EAN (GTIN) of CNX8600 is 4025515154488.
CNX8600 ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival.
Master PLC system components: CPU, power supply, I/O modules, communication interfaces, and software with sizing formulas and selection tips. Shop at Stoklink.