Main Components of a PLC System: Complete Guide for Engineers
Master PLC system components: CPU, power supply, I/O modules, communication interfaces, and software with sizing formulas and selection tips. Shop at Stoklink.
SITOP UPS1600 DC UPS module - 24V DC 20A, adjustable backup time 0.5-20 min
The Siemens 6EP4136-3AB00-0AY0 is a SITOP UPS1600 DC uninterruptible power supply module rated 24 V DC at 20 A, providing 21-29 V input buffering with an adjustable cut-in threshold and a rotary-switch-selectable backup time from 0.5 to 20 minutes. It delivers up to 60 A peak, runs at 97.7% efficiency with 10 W typical power loss, and carries an IP20 rating in a compact 50 x 139 x 125 mm DIN-rail enclosure weighing 0.39 kg.
The rotary-coded backup-time switch (0.5 to 20 minutes, or maximum) sets how long the 24 V rail rides through a supply interruption before the connected battery module is exhausted, letting the same UPS1600 serve either a quick-ride-through role or a full shutdown-sequence role without reprogramming. The adjustable cut-in threshold (21-25 V in seven steps) lets it buffer only on a genuine dip rather than normal ripple from a lightly loaded 24 V supply. At 20 A rated and 60 A peak, it covers inrush from contactors and solenoids during the switchover without derating the connected battery module.
Used to bridge short mains interruptions for PLCs, I/O, and drives on a 24 V DC bus in control cabinets where an orderly shutdown or ride-through is required instead of an immediate loss of power.
| product brand name | SITOP |
|---|---|
| product type designation | UPS1600 |
| type of current supply | DC UPS 24 V/20 A |
| voltage curve at input | DC |
|---|---|
| supply voltage at DC rated value | 24 V |
| input voltage at DC | 21 ... 29 V |
| adjustable response value voltage for buffer connection preset | 21.5 V |
| adjustable response value voltage for buffer connection | 21 ... 25 V; Adjustable: 21 V, 21.5 V, 22 V, 22.5 V, 23 V, 24 V, 25 V DC |
| input current at rated input voltage 24 V rated value | 25 A; for max. charging current (4 A) |
| type of energy storage | with batteries |
|---|---|
| product function DC-UPS modularly expandable | Yes |
| design of the mains power cut bridging-connection | Adjustable range using rotary coding switch: 0.5 min, 1 min, 2 min, 5 min, 10 min, 20 min, max. buffering time |
| Part number | 6EP4136-3AB00-0AY0 |
|---|---|
| Type designation | UPS1600 |
| Brand | Siemens |
| Condition | New, factory sealed |
| Source | Siemens and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Active, in production |
| EAN | 4025515154211 |
| ETIM class | EC000382 |
| eCl@ss | 27040705 |
| output voltage: in normal operation at DC rated value | 24 V |
|---|---|
| output voltage: in buffering mode at DC rated value | 24 V |
| formula for output voltage | Vin - approx. 0.2 V |
| startup delay time typical | 60 ms |
| voltage increase time of the output voltage typical | 60 ms |
| output voltage in buffering mode at DC | 18.5 ... 27 V |
| output current: rated value | 20 A |
| output current: in normal operation | 0 ... 60 A |
| output current: in buffering mode | 0 ... 60 A |
| peak current | 60 A |
| property of the output short-circuit proof | Yes |
| design of short-circuit protection | Limitation to 3 x I rated for 30 ms/min; through-conductivity for 1.5 x I rated for 5 sec/min |
| charging current | 0.1 A, 4 A |
| efficiency in percent: at rated output voltage for rated value of the output current typical | 97.7 % |
|---|---|
| efficiency in percent: in case of operation on rechargeable battery typical | 97.7 % |
| power loss [W]: at rated output voltage for rated value of the output current typical | 10 W |
| power loss [W]: in case of operation on rechargeable battery typical | 10 W |
| supplied active power typical | 480 W |
| product function: reverse polarity protection against energy storage unit polarity reversal | Yes |
|---|---|
| product function: reverse polarity protection against input voltage polarity reversal | Yes |
| display version: for normal operation | Normal operation: LED green (OK), floating changeover contact "Bat/OK" to setting "OK" ("OK" means: Voltage of the supplying power supply unit is greater than cut-in threshold set at the DC UPS module); Lack of buffer standby: LED red (alarm), floating changeover contact "Alarm/Bat" to setting "Alarm"; Battery replacement required: LED red (alarm) flashing with approx. 0.25 Hz, floating changeover contact "Alarm/Bat" switching with approx. 0.25 Hz; Energy storage > 85%: LED green (Bat > 85%), floating NOcontact "Bat > 85" closed; Permissible contact current capacity: DC 60 V/1 A or AC 30 V /1 A |
| display version: in buffering mode | Buffered mode: LED yellow (Bat), floating changeover contact "OK/Bat" to setting "Bat"; Prewarning battery voltage 85%: LED green (Bat > 85%), floating NO contact "Bat > 85" closed |
| product component PC interface | No |
|---|---|
| product function communication function | Yes |
| design of the interface | without |
| galvanic isolation between input and output | No |
|---|---|
| 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: UKCA marking | Yes |
| certificate of suitability: EAC approval | Yes |
| type of certification CB-certificate | Yes |
| MTBF at 40 °C | 408 654 h |
| certificate of suitability: ATEX | No |
|---|
| shipbuilding approval | Yes |
|---|---|
| Marine classification association: American Bureau of Shipping Europe Ltd. (ABS) | Yes |
| Marine classification association: Det Norske Veritas (DNV) | Yes |
| Environmental Product Declaration | Yes |
|---|---|
| global warming potential [CO2 eq]: total | 269.9 kg |
| global warming potential [CO2 eq]: during manufacturing | 16 kg |
| global warming potential [CO2 eq]: during operation | 253.5 kg |
| global warming potential [CO2 eq]: after end of life | 0.3 kg |
| ambient temperature: during operation | -25 ... +70 °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 | screw terminal |
|---|---|
| at input | 24 V DC: 2 screw terminals for 0.2 ... 6 mm2/24 ... 13 AWG |
| at output | 24 V DC: 2 screw terminals for 0.2 ... 6 mm2/24 ... 13 AWG |
| for rechargeable battery module | 24 V DC: 2 screw terminals for 0.2 ... 6 mm2/24 ... 13 AWG |
| for control circuit and status message | 14 screw terminals for 0.2 ... 1.5 mm2/24 ... 16 AWG |
| width × height × depth of the enclosure | 50 × 139 × 125 mm |
|---|---|
| installation width × mounting height | 50 mm × 239 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 35x7.5/15 |
| DIN-rail mounting | Yes |
| S7 rail mounting | No |
| wall mounting | No |
| housing can be lined up | Yes |
| electrical accessories | Battery module |
|---|
| other information | Specifications at rated input voltage and ambient temperature +25 °C (unless otherwise specified) |
|---|
| eClass | 6 27-04-06-90 |
|---|---|
| ETIM | 10 EC000382 |
| IDEA | 4 4149 |
| UNSPSC | 15 39-12-10-11 |
| Net weight | 0.39 kg |
|---|---|
| Country of origin | Romania |
| Shipping weight | 0.89 kg |
| Ships from | Türkiye |
| Dispatch | 13 Nov |
| Stock | In stock |
Source: manufacturer data · Last verified: 01 Nov 2026
The rated current of UPS1600 is 20 A.
The rated operational voltage of UPS1600 is 24 V AC.
The rated motor power of UPS1600 is 0.48 kW.
The tariff (HS) code on file for UPS1600 is 85044060.
The EAN (GTIN) of UPS1600 is 4025515154211.
UPS1600 ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival. Stock items are dispatched within 1–2 business days.
Master PLC system components: CPU, power supply, I/O modules, communication interfaces, and software with sizing formulas and selection tips. Shop at Stoklink.