This guide explains how to read Delta Electronics part numbers for variable frequency drives, AC servo drives and motors, DVP programmable logic controllers and DOP human machine interfaces. It is written for maintenance engineers and buyers who have a model number on a nameplate and need the right replacement.
Delta VFD model numbers
Delta uses two model number formats. The legacy power code format covers VFD-L, VFD-M, VFD-E, VFD-EL, VFD-B, VFD-S, VFD-F, VFD-VE, C2000 and CP2000. The newer current code format covers MS300, ME300 and MH300.
Power code format
The pattern is VFD, then the power code, then the series, then the voltage and phase code, then a version letter and an optional enclosure suffix.
| Field | المعنى | Examples |
|---|---|---|
| Power code | Motor power in kW multiplied by ten | 004 is 0.4 kW, 022 is 2.2 kW, 075 is 7.5 kW, 450 is 45 kW |
| Series | Product family | L, M, E, EL, B, S, F, VE, C for C2000, CP for CP2000 |
| Voltage and phase | Supply the drive accepts | 21 is 230 V single-phase, 23 is 230 V three-phase, 43 is 380 to 480 V three-phase |
| Version | Hardware revision or built-in option | A standard, S built-in EMC filter on C2000, B hardware version on CP2000 |
| Enclosure suffix | Protection and mounting | -21 is IP20 with NEMA 1 wall mounting, -00 is IP00 open type |
Worked example: VFD075CP43B-21 is a 7.5 kW CP2000 fan and pump drive on a 380 to 480 V three-phase supply, hardware version B, IP20 with NEMA 1 mounting.
Current code format, MS300 and ME300
The pattern is VFD, then the rated output current, then MS, then the voltage and phase code, then the enclosure letter, then the EMC filter letter, then the model and version characters.
| Field | المعنى | Examples |
|---|---|---|
| Current code | Rated output current in amps | 1A5 is 1.5 A, 9A0 is 9.0 A, 13A is 13 A, 45A is 45 A |
| Voltage and phase | Supply the drive accepts | 21 is 230 V single-phase, 23 is 230 V three-phase, 43 is 380 to 480 V three-phase |
| Enclosure | Protection class | A is IP20 with NEMA 1, E is IP40, M is IP66 with NEMA 4X, P is plate mount |
| EMC filter | Filter fitted or not | N is no built-in filter, F is built-in filter |
| Model and version | Standard model and version code | SAA on the current standard range |
Worked example: VFD9A0MS43ANSAA is an MS300 rated 9.0 A output, which is a 3.7 kW motor, on a 380 to 480 V three-phase supply, IP20, with no built-in EMC filter.
Which Delta drive series to choose
| Series | Best for | Status |
|---|---|---|
| MS300 | General purpose machinery, the default choice today | Current |
| CP2000 | Fans, pumps, HVAC and water systems | Current |
| C2000 and C2000 Plus | Cranes, hoists, extruders, winders, closed loop control | Current |
| VFD-E | Modular OEM machinery with a built-in simple PLC | Supplied for existing machines |
| VFD-EL | Lowest cost micro drive for fans and small pumps | Supplied for existing machines |
| VFD-B | Constant torque and hoisting on older machines | Discontinued, replaced by MS300 and C2000 |
| VFD-M, VFD-L, VFD-S | Older general purpose machinery | Discontinued, replaced by MS300 |
Delta AC servo drive model numbers
The pattern is ASD, then the series, then the power code, then the voltage and phase code, then the model type letter.
| Field | المعنى | Examples |
|---|---|---|
| Series | Servo family | B2, B3, A2, A3, E3, M, W3 |
| Power code | Rated output power | 01 is 100 W, 04 is 400 W, 07 is 750 W, 10 is 1 kW, 15 is 1.5 kW, 20 is 2 kW, 30 is 3 kW |
| Voltage and phase | Supply the drive accepts | 21 is 220 V single or three-phase, 23 is 220 V three-phase only, 43 is 400 V three-phase |
| Model type | Command interface and fieldbus | B standard on ASDA-B2; L standard, M CANopen, F DMCNET, E EtherCAT on B3, A2 and E3 |
Worked example: ASD-A2-0721-M is an ASDA-A2 servo drive, 750 W, 220 V single or three-phase, with CANopen.
Delta servo motor model numbers
The ECMA range pairs with the ASDA-B2 and ASDA-A2. The ECM-B3M and ECM-E3M ranges pair with the ASDA-B3 and ASDA-E3.
| Field | المعنى | Examples |
|---|---|---|
| Voltage and rated speed letter | First letter after ECMA | C is 220 V at 3000 rpm, E is 220 V at 2000 rpm, F is 220 V at 1500 rpm, G is 220 V at 1000 rpm |
| Encoder digit | Second character | 1 is 20-bit incremental, 2 is 17-bit incremental, A is absolute, M is magnetic |
| Frame size | Flange size in millimetres | 04 is 40 mm, 06 is 60 mm, 08 is 80 mm, 13 is 130 mm, 18 is 180 mm |
| Power | Rated output power | 01 is 100 W, 04 is 400 W, 07 is 750 W, 30 is 3 kW |
| Shaft and brake option | Shaft type, oil seal and brake | R is keyway with tapped hole and oil seal, no brake; S is the same with a 24 V DC holding brake |
| Shaft diameter code | Shaft size | S is the standard diameter for that frame |
Worked example: ECMA-C20807SS is a 220 V 3000 rpm motor with a 17-bit encoder, 80 mm flange, 750 W, keyway shaft with oil seal and a holding brake fitted, standard shaft diameter.
One point that causes frequent ordering mistakes: the 1 or 2 after the first letter is the encoder type, not the speed. ECMA-C10604RS and ECMA-C20604RS are the same 400 W, 3000 rpm, 1.27 N.m motor. The C1 version has a 20-bit encoder and only works with the ASDA-A2; the C2 version has a 17-bit encoder and works with the ASDA-B2 and the ASDA-A2.
Delta DVP PLC model numbers
The pattern is DVP, then the total number of input and output points, then the series code, then the power supply code, then the output type, then the generation digit on EH and EC models.
| Field | المعنى | Examples |
|---|---|---|
| Points | Inputs plus outputs, not inputs only | 16, 24, 32, 40, 60, 80 |
| Series | PLC family | EH for EH3, ES2, EC for EC3, ES3 |
| Power supply | Supply the controller accepts | 00 is 100 to 240 V AC, 11 is 24 V DC |
| Output type | Output stage | R is relay, T is transistor NPN sinking, S is transistor PNP sourcing, M is differential line driver |
| Generation | Series generation | 3 on EH3 and EC3 models |
Worked example: DVP40EH00T3 is a DVP-EH3 with 40 points, that is 24 inputs and 16 outputs, on a 100 to 240 V AC supply, with NPN transistor outputs.
| Series | Program capacity | Pulse output | Best for |
|---|---|---|---|
| DVP-EH3 | 30k steps | Up to 4 axes at 200 kHz | Multi-axis motion, packaging, printing |
| DVP-ES2 | 16k steps | Up to 100 kHz | General machine control |
| DVP-EC3 | About 4k steps | Up to 10 kHz on 2 channels | Simple sequencing and low cost panels |
Delta DOP-100 HMI model numbers
The pattern is DOP, then 1 for the 100 series, then the screen size, then the model type letter, then the resolution class letter.
| Field | المعنى | Examples |
|---|---|---|
| Size | Screen size | 03 is 4.3 inch, 07 is 7 inch, 10 is 10.1 inch, 12 is 12 inch, 15 is 15 inch |
| Model type | Feature level | B basic, C standard general, E standard with Ethernet, I standard with Ethernet and three COM ports, W advanced narrow frame, M advanced multimedia |
| Resolution | Pixel resolution | Q is 480 by 272, V is 800 by 480, S is 1024 by 600, G is 800 by 600, X is 1024 by 768 |
Worked example: DOP-110IS is a 10.1 inch panel, standard model with Ethernet and three COM ports, at 1024 by 600 pixels.
If you are replacing an older Delta DOP-B panel, the usual successors are DOP-B07S410 to DOP-107BV, DOP-B07S411 to DOP-107CV, DOP-B07E411 to DOP-107EV and DOP-B10S511 to DOP-110CS. The panel cut-out is not always identical, so confirm the cut-out dimensions before you order.
Frequently Asked Questions
How do I read a Delta VFD model number?
Older Delta series use the power code format: VFD, then the motor power in kW multiplied by ten, then the series letters, then the voltage and phase code, then a version letter. So VFD007B43A is 0.75 kW, VFD-B series, 380 to 480 V three-phase, version A. The MS300 and ME300 use the newer current code format instead, where the digits after VFD are the rated output current rather than the power.
What does 21, 23 and 43 mean in a Delta part number?
They are the supply voltage and phase. 21 means 200 to 240 V and accepts single-phase or three-phase, 23 means 200 to 240 V three-phase only, and 43 means 380 to 480 V three-phase. The same convention is used on both inverters and servo drives.
Which Delta VFD replaces the discontinued VFD-M, VFD-L, VFD-S and VFD-B?
Delta recommends the MS300 for VFD-M, VFD-L, VFD-S and the smaller VFD-B ratings, and the C2000 for the larger VFD-B and VFD-VE ratings. Match the motor current rather than the old model number when you select the replacement.
What is the difference between R and S at the end of a Delta ECMA motor part number?
Both mean a keyway shaft with a tapped centre hole and an oil seal fitted. R means no brake and S means a 24 V DC holding brake is fitted. So ECMA-C20807RS and ECMA-C20807SS are the same 750 W motor, without and with the brake.
What does the second character in ECMA-C2 or ECMA-C1 mean?
It is the encoder type, not the speed. ECMA-C2 carries a 17-bit incremental encoder and pairs with the ASDA-B2 and ASDA-A2. ECMA-C1 carries a 20-bit incremental encoder and pairs with the ASDA-A2 only. The rated speed is set by the first letter instead: C is 3000 rpm, E is 2000 rpm, F is 1500 rpm and G is 1000 rpm.
What do the letters L, M, F and E mean on a Delta servo drive?
They are the command and fieldbus options. L is the standard pulse, analog and Modbus model. M adds CANopen. F adds DMCNET, Delta’s own motion network. E adds EtherCAT. On the ASDA-E3 the L model is the pulse and Modbus version and the EtherCAT version is the E model.
How do I read a Delta DVP PLC part number?
DVP, then the total number of input and output points (inputs plus outputs, not inputs only), then the series code such as EH, ES2 or EC, then the power supply code (00 for 100 to 240 V AC, 11 for 24 V DC), then the output type, then the generation digit. So DVP32EH00T3 is 32 points, EH3 series, AC supply, transistor output, third generation.
What is the difference between R and T outputs on a Delta PLC?
R is a relay output, which handles AC and DC loads directly but switches slowly. T is an NPN sinking transistor output, which switches fast enough for pulse train control of steppers and servo drives. If the machine has a positioning axis you need the T version.
How do I read a Delta DOP-100 HMI part number?
DOP, then 1 for the 100 series, then the screen size, then the model type letter, then the resolution class letter. The model types are B basic, C standard general, E standard with Ethernet, I standard with Ethernet and three COM ports, W advanced narrow frame and M advanced multimedia. Resolution letters are Q for 480 by 272, V for 800 by 480, S for 1024 by 600, G for 800 by 600 and X for 1024 by 768.
Can RendatSP supply a complete Delta servo set with cables?
Yes. We normally quote the drive, the motor, the motor power cable and the encoder cable together, with the cable length matched to the distance between the panel and the machine, so the axis is complete when it arrives.
Ordering from RendatSP
RendatSP supplies genuine Delta drives, servo systems, PLCs and HMIs to factories, machine builders and maintenance teams across the Middle East and Africa, with local agents in eleven countries. Send us the model number from the nameplate, or a photo of it, and we will confirm the correct part, the price and the lead time to your country. If the part is discontinued we will tell you what replaces it and what changes in the wiring or the panel cut-out.