Product Description

Lika IT65-L-2000ZCP2ERK — IT65 Series Incremental Rotary Encoder, 2000 PPR, Line Driver (RS422)

Position feedback is only as good as the encoder providing it. The signal needs to arrive at the controller clean and without noise-induced corruption — through cable runs that share trays with drive output cables, across distances where single-ended signals would pick up common-mode interference, in environments where coolant, vibration, and temperature swings are routine rather than exceptional. These are not edge-case considerations. They describe the normal operating conditions of the machines this encoder is built for.

The IT65-L-2000ZCP2ERK is Lika's IT65 series 2000 PPR incremental encoder configured for exactly those conditions. RS422 line driver output for noise-immune differential signal transmission. Differential A/B/Z channel pairs (AB0/AB0̄) via MIL 10-pin plug. IP65 die-cast zamac housing rated for shock, vibration, and sustained humidity. Extended temperature option (K suffix) covering –40°C to +100°C operation. 6,000 rpm maximum shaft speed with 100 N axial and radial shaft load capacity.

Genuine Lika Electronic manufacture, Italy. Brand new original stock. In stock and ready for immediate worldwide dispatch.

Technical Specifications

Parameter	Value
Model Number	IT65-L-2000ZCP2ERK
Series	IT65 (ROTAPULS)
Encoder Type	Incremental, optical
Resolution	2,000 PPR (pulses per revolution)
Output Circuit	L — Line Driver, RS422 differential
Power Supply Voltage	+10V to +30V DC
Output Signals	A, /A, B, /B, Z, /Z (AB0/AB0̄ differential with index)
Electrical Connection	ZCP — MIL 10-pin plug, radial
Connection Position	R — Radial
Operating Temperature	K — Extended: –40°C to +100°C
Storage Temperature	–25°C to +85°C
Protection Rating	IP65
Shaft Diameter Options	Ø 6, 8, 9.52, 10, 12 mm
Shaft Load (axial/radial)	100 N max
Max Shaft Speed	6,000 rpm
Counting Frequency	300 kHz max
Current Consumption	70 mA (typical)
Output Current (per channel)	40 mA max
Housing Material	Zamac die-cast
Flange Material	Anticorodal aluminium (UNI EN AW-6082)
Shaft Material	Stainless steel, non-magnetic (UNI EN 4305)
Bearings	ABEC 5
Bearing Life	400 × 10⁶ rev min (10⁹ rev with ≤20 N shaft load)
Starting Torque at 20°C	0.4 Ncm (typical)
Shock	250 g, 6 ms (CEI EN 60068-2-27)
Vibration	10 g, 5–2000 Hz (CEI EN 60068-2-6)
Weight	~400 g
EMC Immunity	EN 61000-4-2, EN 61000-4-4
Certifications	CE, RoHS, REACH
Country of Origin	Italy

Decoding the IT65-L-2000ZCP2ERK Model Number

Lika's order code is structured to encode every configurable parameter directly in the catalog number. Reading the IT65-L-2000ZCP2ERK designation from left to right:

IT65 identifies the product series — the IT65 within the I65/IT65 ROTAPULS family, which uses the square (US-size) flange configuration as opposed to the I65's clamp flange. Both share the same 65 mm body diameter, electrical specifications, and mechanical robustness, but the IT65's square flange suits machine installations where a four-bolt pattern is the standard mounting method.

L is the output circuit code for Line Driver (RS422) in the +10V to +30V supply range. This is the differential variant that operates across the wider supply range rather than the L1 circuit which requires a tighter +5V supply. For most industrial installations running 24V DC logic, the L (+10V–+30V) variant is the practical choice.

2000 is the resolution — 2,000 pulses per revolution. At 6,000 rpm maximum shaft speed, this produces a counting frequency of 200 kHz on each channel, well within the 300 kHz maximum counting frequency specification.

ZCP identifies the output signal set and connector type: Z = includes zero (index) pulse, C = differential complementary pairs, P = MIL 10-pin plug. The full signal set is A, /A, B, /B, Z, /Z — six conductors of encoder signals plus power and ground on the 10-pin MIL connector.

2E encodes the shaft diameter and protection configuration for the installed variant.

R = Radial connection orientation — the cable or connector exits from the side of the encoder body rather than the rear (axial). Radial exit suits installations where the encoder is mounted against a wall or bracket with limited clearance behind the body.

K = Extended temperature option, –40°C to +100°C operating range.

IT65 vs I65: Square Flange vs Clamp Flange

Within Lika's 65 mm body diameter ROTAPULS family, the IT65 and I65 differ in their mounting interface:

The I65 uses a clamp (servo) flange — a circular rear flange with a clamping collar that grips the mounting surface. Clamp flanges are the European standard for servo motor feedback encoders, compatible with standard servo motor mounting faces and encoder brackets on machine tools and servo axes.

The IT65 uses a square (pilot) flange — a square front mounting face with four mounting holes in the US/imperial pattern. Square flanges are the conventional US industrial standard, common in gearboxes, conveyors, and industrial machinery designed to North American dimensional standards. The IT65 is the correct choice when the mechanical installation follows a square-hole mounting pattern, or when replacing an existing US-pattern encoder.

Both models share identical electrical specifications, shaft dimensions, protection ratings, and resolution options — the mechanical interface is the only differentiator.

RS422 Line Driver Output: Why Differential Signals Matter

The "L" output circuit in the IT65-L-2000ZCP2ERK designation specifies RS422-compatible differential line driver output. Every signal — A, /A, B, /B, Z, /Z — is transmitted as a complementary pair: one conductor carries the signal, the companion conductor carries its logical inverse.

The receiver at the controller end reads the voltage difference between the two conductors, not the voltage of either conductor relative to ground. Any noise — electromagnetic pickup from adjacent power cables, ground potential differences between encoder and controller, switching transients from drives — affects both conductors of a pair equally. Because the noise appears as a common-mode voltage (affecting both conductors identically), the differential receiver cancels it when it subtracts one conductor from the other. Only the original differential signal survives.

In practice this means RS422 line driver encoders can reliably transmit signals over cable runs of 100 metres or more in electrically noisy machine environments — runs where a single-ended NPN or PNP output signal would accumulate unacceptable noise. For high-resolution encoders like this 2000 PPR model, where the pulse period at operating speed is measured in microseconds, noise immunity is not optional.

The +10V to +30V supply range (the "L2" variant) also means the encoder operates directly from a standard 24V DC industrial supply without a local 5V regulator. Installations using a 5V supply should verify minimum supply voltage compatibility.

2000 PPR: Resolution and Frequency at Speed

At 2,000 pulses per revolution, the encoder generates 2,000 rising edges on channel A per shaft revolution. For a motion controller using 4× quadrature decoding (counting all rising and falling edges on both A and B channels), the effective position count is 8,000 counts per revolution — 0.045° per count.

At different shaft speeds, the channel A frequency works out as follows:

Shaft Speed	Channel A Frequency	4× Count Rate
600 rpm	20 kHz	80 kHz
1,500 rpm	50 kHz	200 kHz
3,000 rpm	100 kHz	400 kHz
6,000 rpm (max)	200 kHz	800 kHz

The encoder's 300 kHz maximum counting frequency means channel A remains within specification at full 6,000 rpm. The controller's input frequency limit must also be checked — many standard PLC high-speed counter inputs cap at 100–200 kHz, making 3,000 rpm the practical maximum speed at 2,000 PPR for those systems. High-speed motion controllers with dedicated encoder interface hardware typically handle well above the encoder's own frequency limit.

IP65 Protection and –40°C to +100°C Extended Temperature (K)

The standard IT65 protection rating is IP65 — fully protected against dust ingress and against directed water jets from any angle. For most industrial machine environments — machine tools with coolant, conveyor systems with washdown, outdoor installations with rain exposure — IP65 is the correct protection level.

The K suffix activates the extended temperature option, broadening the operating range from the standard –25°C to +85°C to –40°C to +100°C. This matters in two specific application scenarios:

At the cold end, –40°C operation covers outdoor installations in northern climates where equipment may start from ambient temperatures below the standard limit. Grease viscosity in the bearings at –40°C is the primary concern — the K option specifies lubricants rated for cold-start operation.

At the hot end, +100°C operation covers encoders mounted in proximity to hot process equipment, motors running at elevated temperature, or installations inside enclosures that accumulate heat in summer operation. The 15°C extension above the standard +85°C limit reduces the need for forced cooling or thermal isolation in these installations.

The extended temperature option is specified at order time and reflects both the bearing lubricant selection and internal component temperature ratings for the motor and optics.

MIL 10-Pin Plug (ZCP) and the Cable Ecosystem

The ZCP connection code specifies a 10-pin MIL-standard circular plug on the encoder. The MIL connector family is the established standard for industrial encoder connections — the circular metal housing and threaded coupling ring provide a mechanically secure, vibration-resistant connection that will not loosen from machine vibration the way push-in connectors can.

The 10-pin MIL plug (as opposed to the 7-pin variant) is required when the differential complementary signal set (A, /A, B, /B, Z, /Z) is used — six signal conductors plus power, common, and shield occupy more pins than the 7-pin connector can accommodate with complete differential pairs.

Lika offers compatible cordsets in 5-metre (EC-M10F-LK-I5-L050) and 10-metre (EC-M10F-LK-I8-L100) lengths with the mating female MIL 10-pin connector pre-wired at one end. The E10MLS mating connector is available separately for custom cable assemblies.

The R suffix (radial connection) means the connector exits perpendicular to the encoder shaft. When selecting mounting orientation during installation, confirm that the connector clearance envelope in the radial direction matches the available space. For tight axial clearances behind the encoder (against a machine frame or wall), radial connection is typically mandatory; where the encoder is mounted in open space, either axial or radial works.

Frequently Asked Questions

Q: What does the "L" output circuit mean, and what supply voltage does it require?

A: The "L" code in the IT65 order system designates RS422 Line Driver output — a differential output type where each signal channel (A, B, Z) is transmitted as a complementary pair. For the IT65-L (L2 variant) model, the supply voltage range is +10V to +30V DC, covering standard 24V DC industrial supplies directly. The differential output provides high noise immunity, supporting long cable runs in electrically noisy environments. Note: the L1 variant requires a tighter +5V supply; confirm which sub-variant you are ordering if supply voltage is critical.

Q: What is the electrical output configuration — what signals are available?

A: The ZCP suffix specifies the full differential signal set: A, /A, B, /B, Z, /Z — channels A and B in quadrature with their complements, plus a differential index (zero) pulse Z with its complement. These six signals plus supply power and common are carried on the MIL 10-pin plug. The quadrature A/B signal pair enables direction detection in addition to position counting; the Z pulse provides one reference pulse per revolution for homing and position initialisation.

Q: What is the difference between the IT65 (square flange) and I65 (clamp flange)?

A: The IT65 uses a square pilot flange with four mounting holes — the US industrial standard mounting pattern common in gearboxes, conveyor drives, and North American machinery. The I65 uses a clamp (servo) flange — the European standard for servo motor encoder mounting. Both models share identical electrical specifications, shaft options, resolution range, and protection ratings. Selection depends entirely on the mechanical mounting interface of the machine.

Q: What cable and mating connector accessories are available for the MIL 10-pin connection?

A: Lika offers factory-made cordsets with the mating female MIL 10-pin connector: EC-M10F-LK-I5-L050 (5 metres) and EC-M10F-LK-I8-L100 (10 metres). For custom cable assemblies, the E10MLS mating connector is available separately. The encoder's MIL plug is a standard circular connector type, so third-party MIL 10-pin female connectors can also be used if the Lika accessories are not locally stocked.

Q: What is the maximum cable run length possible with RS422 output?

A: RS422 differential signalling supports transmission distances of up to 100 metres at typical encoder pulse frequencies. At very high speeds where the pulse period approaches the propagation delay limit of long cables, effective range is reduced. For the majority of industrial machine applications with cable runs under 50 metres, RS422 provides a reliable signal margin. Always use shielded twisted-pair cable with the shield connected at the controller end to maximise noise rejection.

Q: What is the K suffix and when is it needed?

A: The K suffix activates the extended temperature option, changing the operating range from the standard –25°C to +85°C to –40°C to +100°C. Specify K when the encoder will be exposed to ambient temperatures below –25°C (cold outdoor installations, refrigerated environments) or above +85°C (proximity to hot process equipment, thermally enclosed installations). The standard version without K covers the majority of indoor industrial applications; K is an option for more demanding thermal environments.

Q: Can the IT65-L-2000ZCP2ERK replace encoders from other brands at 2000 PPR?

A: The electrical compatibility depends on whether the replacement encoder's output circuit matches the controller input. RS422 differential inputs on servo drives and motion controllers are standardised — signal polarity (A leads B for clockwise rotation), voltage levels, and the A/B/Z signal structure are consistent across manufacturers. Mechanically, the IT65's square flange mounting dimensions and shaft diameter must match the encoder being replaced. Verify the mounting flange dimensions, shaft diameter, and connector pinout before specifying a replacement.

IT65-L-2000ZCP2ERK New Original Lika Line Driver IT65L2000ZCP2ERK