How to Select an Interface Relay for PLC Outputs
A step-by-step guide to matching PLC output type, coil voltage and current, contact rating, and socket style when selecting an interface relay.
- Part number
- TM221M32TK
- cULus
- CE
- UKCA
- EAC
Modicon M221Schneider Electric TM221M32TK Modicon M221 Book 32 I/O Transistor Logic Controller
Modicon M221 Book logic controller, 32 I/O (16 DI/16 DO transistor), HE-10, 24V DC, IP20.
Description
About the TM221M32TK
About the TM221M32TK
The Schneider Electric TM221M32TK is a Modicon M221 Book-format logic controller with 32 discrete I/O — 16 inputs (4 fast) and 16 PNP transistor outputs (2 fast) — wired through HE-10 connectors in a 70 x 70 x 90 mm housing. Supplied from 24 V DC, each output switches 0.1 A (1.6 A per common), suited to dense low-current point counts.
Certifications & Standards
- CE
- cULus
- LR
- RCM
- DNV-GL
- EAC
- ABS
- UKCA
- cULus HazLoc
- IEC 61131-2
- UL 508
- CAN/CSA C22.2 No. 213
- IACS E10
- ANSI/ISA 12-12-01
Selection Notes
The TM221M32TK doubles the Book controller's I/O count to 32 points through HE-10 connectors instead of the 16-point models' screw terminals, which suits panel builders using pre-wired ribbon-cable harnesses. Its lower 0.1 A per-channel and 1.6 A per-common output rating reflects the higher channel density — it fits many low-current 24 V DC loads (PLC inputs, small relays) rather than a handful of higher-draw actuators.
Specification
Full specification
Main 9
| Range of Product | Modicon M221 |
|---|---|
| Product or Component Type | Logic controller |
| [Us] rated supply voltage | 24 V DC |
| Discrete input number | 16, discrete input 4 fast input IEC 61131-2 Type 1 |
| Analogue input number | 2 0...10 V |
| Discrete output type | Transistor |
| Discrete output number | 16 transistor 2 fast output |
| Discrete output voltage | 24 V DC |
| Discrete output current | 0.1 A |
Complementary 61
| Discrete I/O number | 32 |
|---|---|
| Maximum number of I/O expansion module | 7 (local I/O-Architecture), 14 (remote I/O-Architecture) |
| Supply voltage limits | 20.4…28.8 V |
| Inrush current | 35 A |
| Maximum power consumption in W | 22.3 W 24 V with max number of I/O expansion module), 3.5 W 24 V without I/O expansion module) |
| Power supply output current | 0.52 A 5 V expansion bus, 0.48 A 24 V expansion bus |
| Discrete input logic | Sink or source (positive/negative) |
| Discrete input voltage | 24 V |
| Discrete input voltage type | DC |
| Analogue input resolution | 10 bits |
| LSB value | 10 mV |
| Conversion time | 1 ms per channel + 1 controller cycle time analog input |
| Permitted overload on inputs | +/- 30 V DC 5 min maximum)analog input, +/- 13 V DC permanent)analog input |
| Voltage state 1 guaranteed | >= 15 V input |
| Voltage state 0 guaranteed | <= 5 V input |
| Discrete input current | 7 mA discrete input, 5 mA fast input |
| Input impedance | 3.4 kOhm discrete input, 100 kOhm analog input, 4.9 kOhm fast input |
| Response time | 35 µs turn-off, I2...I5 input, 5 µs turn-on, I0, I1, I6, I7 fast input, 35 µs turn-on, other terminals input, 5 µs turn-off, I0, I1, I6, I7 fast input, 100 µs turn-off, other terminals input, 5 µs turn-on, turn-off, Q0...Q1 output, 50 µs turn-on, turn-off, Q2...Q3 output, 300 µs turn-on, turn-off, other terminals output |
| Configurable filtering time | 0 ms input, 3 ms input, 12 ms input |
| Discrete output logic | Positive logic (source) |
| Maximum current per output common | 1.6 A |
| Output frequency | 100 kHz fast output (PWM/PLS mode) Q0...Q1, 5 kHz output Q2...Q3, 0.1 kHz output Q4...Q15 |
| Absolute accuracy error | +/- 1 % of full scale analog input |
| Maximum leakage current | 0.1 mA transistor output |
| Maximum voltage drop | <1 V |
| Mechanical durability | 20000000 cycles transistor output |
| Maximum tungsten load | <2.4 W output and fast output |
| Protection type | Short-circuit and overload protection with automatic reset, Short-circuit protection on output, Overload and short-circuit protection 0.2 A |
| Reset time | 1 s automatic reset |
| Memory capacity | 256 kB user application and data RAM 10000 instructions, 256 kB internal variables RAM |
| Data backed up | 256 kB built-in flash memory backup of application and data |
| Data storage equipment | 2 GB SD card optional) |
| Battery type | BR2032 or CR2032X lithium non-rechargeable |
| Backup time | 1 year 77 °F (25 °C) by interruption of power supply) |
| Execution time for 1 KInstruction | 0.3 ms event and periodic task, 0.7 ms other instruction |
| Execution time per instruction | 0.2 µs Boolean |
| Exct time for event task | 60 µs response time |
| Application structure | 1 configurable freewheeling/cyclic master task, 1 cyclic auxiliary task, 8 interrupt tasks |
| Maximum size of object areas | 8000 %MW memory words, 255 %TM timers, 512 %KW constant words, 512 %M memory bits, 255 %C counters |
| Realtime clock | With |
| Clock drift | <= 30 s/month 77 °F (25 °C) |
| Regulation loop | Adjustable PID regulator up to 14 simultaneous loops |
| Positioning functions | PTO 2 pulse/direction 100 kHz), PTO 1 CW/CCW 100 kHz) |
| Function Available | PLS, PWM, Frequency generator |
| Counting input number | 4 fast input (HSC mode) 100 kHz 32 bits |
| counter function | Single phase, A/B, Pulse/direction |
| Integrated connection type | USB port mini B USB 2.0, Non isolated serial link serial 1 RJ45 RS485, Non isolated serial link serial 2 RJ45 RS232/RS485 |
| Supply | Serial 1)serial link supply 5 V, <200 mA |
| Transmission rate | 1.2...115.2 kbit/s (115.2 kbit/s by default) 49.2 ft (15 m) RS485, 1.2...115.2 kbit/s (115.2 kbit/s by default) 9.8 ft (3 m) RS232, 480 Mbit/s USB |
| Communication port protocol | USB port USB - SoMachine-Network, Non isolated serial link Modbus master/slave - RTU/ASCII or SoMachine-Network |
| Communication Service | Modbus master, Modbus slave |
| Local signalling | 1 LED (green) for PWR, 1 LED (green) for RUN, 1 LED (red) for module error (ERR), 1 LED (green) for SD card access (SD), 1 LED (red) for BAT, 1 LED (green) for SL1, 1 LED (green) for SL2, 1 LED per channel (green) for I/O state |
| Electrical connection | terminal block, 3 for connecting the 24 V DC power supply, connector, 4 for analogue inputs, Mini B USB 2.0 connector for a programming terminal, HE-10 connector, 20 for inputs, HE-10 connector, 20 for outputs |
| Maximum cable distance between devices | Shielded cable <32.8 ft (10 m) fast input, Unshielded cable <98.4 ft (30 m) output, Unshielded cable <98.4 ft (30 m) digital input, Unshielded cable <3.3 ft (1 m) analog input, Shielded cable <9.8 ft (3 m) fast output |
| Insulation | Between input and internal logic 500 V AC, Between fast input and internal logic 500 V AC, Non-insulated between inputs, Between output and internal logic 500 V AC, Non-insulated between analogue input and internal logic, Non-insulated between analogue inputs |
| Marking | CE |
| Mounting support | Top hat type TH35-15 rail IEC 60715, Top hat type TH35-7.5 rail IEC 60715, plate or panel with fixing kit |
| Height | 3.5 in (90 mm) |
| Depth | 2.8 in (70 mm) |
| Width | 2.8 in (70 mm) |
| Net Weight | 0.60 lb(US) (0.27 kg) |
Environment 20
| Standards | IEC 61131-2, UL 508, CAN/CSA C22.2 No. 213, IACS E10, ANSI/ISA 12-12-01 |
|---|---|
| Product Certifications | cULus, LR, RCM, DNV-GL, EAC, ABS, CE, UKCA, cULus HazLoc |
| Environmental characteristic | Ordinary and hazardous location |
| Resistance to electrostatic discharge | 8 kV in air IEC 61000-4-2, 4 kV on contact IEC 61000-4-2 |
| Resistance to electromagnetic fields | 9.1 V/m (10 V/m) 80 MHz...1 GHz IEC 61000-4-3, 2.7 V/m (3 V/m) 1.4 GHz...2 GHz IEC 61000-4-3, 0.9 V/m (1 V/m) 2...2.7 GHz IEC 61000-4-3 |
| Resistance to magnetic fields | 98.4 A/m (30 A/m) 50/60 Hz IEC 61000-4-8 |
| Resistance to fast transients | 2 kV IEC 61000-4-4 power lines), 2 kV IEC 61000-4-4 relay output), 1 kV IEC 61000-4-4 I/O), 1 kV IEC 61000-4-4 Ethernet line), 1 kV IEC 61000-4-4 serial link) |
| Surge withstand | 2 kV power lines (AC) common mode IEC 61000-4-5, 2 kV relay output common mode IEC 61000-4-5, 1 kV I/O common mode IEC 61000-4-5, 1 kV shielded cable common mode IEC 61000-4-5, 0.5 kV power lines (DC) differential mode IEC 61000-4-5, 1 kV power lines (AC) differential mode IEC 61000-4-5, 1 kV relay output differential mode IEC 61000-4-5, 0.5 kV power lines (DC) common mode IEC 61000-4-5 |
| Resistance to conducted disturbances | 10 V 0.15...80 MHz IEC 61000-4-6, 3 V 0.1...80 MHz Marine specification (LR, ABS, DNV, GL), 10 V spot frequency (2, 3, 4, 6.2, 8.2, 12.6, 16.5, 18.8, 22, 25 MHz) Marine specification (LR, ABS, DNV, GL) |
| Electromagnetic emission | Conducted emissions 79 dBμV/m QP/66 dBμV/m AV power lines (AC))0.15…0.5 MHz IEC 55011, Conducted emissions 73 dBμV/m QP/60 dBμV/m AV power lines (AC))0.5…300 MHz IEC 55011, Conducted emissions 120...69 dBµV/m QP power lines)10…150 kHz IEC 55011, Conducted emissions 63 dBμV/m QP power lines)1.5…30 MHz IEC 55011, Radiated emissions 40 dBμV/m QP class A 10 m)30…230 MHz IEC 55011, Conducted emissions 79...63 dBμV/m QP power lines)150…1500 kHz IEC 55011, Radiated emissions 47 dBμV/m QP class A 10 m)200…1000 MHz IEC 55011 |
| Immunity to microbreaks | 10 ms |
| Ambient air temperature for operation | 14…131 °F (-10…55 °C) horizontal installation), 14…95 °F (-10…35 °C) vertical installation) |
| Ambient Air Temperature for Storage | -13…158 °F (-25…70 °C) |
| Relative humidity | 10…95 %, without condensation in operation), 10…95 %, without condensation in storage) |
| IP degree of protection | IP20 with protective cover in place |
| Pollution degree | <= 2 |
| Operating altitude | 0...6561.68 ft (0...2000 m) |
| Storage altitude | 0…9842.5 ft (0…3000 m) |
| Vibration resistance | 3.5 mm 5…8.4 Hz symmetrical rail, 3.5 mm 5…8.4 Hz panel mounting, 1 gn 8.4…150 Hz symmetrical rail, 1 gn 8.4…150 Hz panel mounting |
| Shock resistance | 147 m/s² 11 ms |
Show all 103 specifications ↓ Show less ↑13 more values in Identification, Contractual warranty, Logistics.
Identification 7
| Part number | TM221M32TK |
|---|---|
| Brand | Schneider Electric |
| Condition | New, factory sealed |
| Source | Schneider Electric and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Active, in production |
| EAN | 3606480611339 |
Contractual warranty 1
| Warranty (in months) | 18 |
|---|
Logistics 5
| Country of origin | TW |
|---|---|
| Shipping weight | 0.27 kg |
| Ships from | Türkiye |
| Dispatch | — |
| Stock | On request |
Source: manufacturer data · Last verified: 30 Oct 2026
Documents
Documents for TM221M32TK
No documents are on file for this part yet.
Ask us for the datasheet
Certifications
Certifications and standards
- cULus
- CE
- UKCA
- EAC
- IEC 61131-2
- UL 508
- CAN/CSA C22.2 No. 213
- IACS E10
- ANSI/ISA 12-12-01
Quick answers
Questions about the TM221M32TK
What is the HS code of TM221M32TK for customs?
The tariff (HS) code on file for TM221M32TK is 853710.
What is the EAN of TM221M32TK?
The EAN (GTIN) of TM221M32TK is 3606480611339.
Where does TM221M32TK ship from, and how fast?
TM221M32TK ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival.
Guides
Guides for PLC & controllers
Main Types of Programmable Logic Controllers: A Complete PLC Guide
Compare the 5 main PLC types, IEC 61131-3 languages, scan-time sizing, and brand options to choose the right controller for your plant. Shop at...
Programmable Logic Controller Guide: Selection, Application, and Maintenance for Engineers
PLC selection guide for engineers covering IEC 61131 compliance, Siemens, Rockwell, Schneider, ABB comparison, scan time sizing, and wiring. Shop at Stoklink.
Reviews
Customer reviews
Series
Schneider Electric Modicon M221
- Brand
- Schneider Electric
- Series
- Modicon M221
