YASKAWA MEMOCON-SC 2000 series reversible counter module

YASKAWA MEMOCON-SC 2000 series reversible counter module

Core specifications of the product

1. General specifications

Category parameter details

Working environment temperature: 0~55 ℃ (storage: -20~85 ℃); Humidity: 10~90% RH (without condensation)

Environmental restrictions: no explosive, flammable, or corrosive gases; No severe vibration/impact (compliant with JIS C0911/C0912 standards)

Electrical performance and insulation strength: 1500VAC/1 minute; Insulation resistance: ≥ 100M Ω (500VDC); Anti noise: 1500V (noise simulator)

Physical dimensions: 38 (width) x 250 (height) x 104 (depth) mm (including terminal block); Weight approximately 0.6kg

Power consumption 5VDC ± 3%, 0.25A (internal consumption current)

2. Performance specifications

Detailed description of core parameters

Counter configuration with 2 independent counter circuits, supporting separate configuration function

Count digit GL20 adaptation: 6-digit decimal (0~999999); GL60S adaptation: 8-bit decimal (0~99999999)

Counting speed multiplier X1: 50kpps; X2：100kpps； X4：200kpps

Pulse input supports voltage levels of 5VDC, 12VDC, and 24VDC; Input mode: Phase A/B pulse, signed pulse

External coincidence output capability: open collector, maximum load 29V/250mA; Response time ≤ 5ms

External signals support external counting enable, external reset, and external sampling (1 counter per channel)

Test Input Common ADD Test (TST1), SUBTRACT Test (TST2) Input (Supports 12V/24V)

System configuration and installation requirements

1. System composition

Core components: Power module → CPU module → B2801 reversible counter module → Other I/O modules → Programming panel (P150) → Pulse generator

Connection relationship: The CPU module communicates with B2801 through the I/O interface, and external devices (pulse generators, sensors) are connected to B2801 through terminals, supporting multi module expansion

2. Installation specifications

(1) Environmental requirements

Prohibited installation scenarios: direct sunlight, temperatures exceeding 0-55 ℃, humidity>95% or condensation, contact with water/oil/chemicals, areas with severe vibration/impact

Installation operation: The fixing screws need to be tightened and checked regularly; Unused connector cover plates must not be removed (to prevent foreign objects from entering)

(2) Wiring requirements

Power specification: Use a power supply that meets the rated specifications to avoid overload and fire hazards

Anti interference measures:

The signal line adopts shielded twisted pair cable, and the shielding layer is grounded at a single point

The distance between the I/O line and the power line is ≥ 30cm, and bundling or wiring in the same pipe is prohibited

Install insulation transformer and noise filter on external power supply

Wiring taboos: Avoid foreign objects such as wire shavings from entering the module or installation base

(3) Switch settings

SW1: Counting bit switching (OFF=6-digit mode/GL20; ON=8-bit mode/GL60S)

SW2: Reserved unused (factory default OFF)

Four core counter functions

B2801 supports four independent counter functions, which can be configured with two separate counters through initial settings. The counting operation is not affected by the running status of the CPU (counting can still continue when the CPU stops).

1. Comparison Counter

(1) Core functions

Basic ability: addition and subtraction bidirectional counting (supports carry/borrow), outputs coincidence signals by comparing the current count value with the preset value

Coincidence mode: 3 options (current value>preset value, current value=preset value, current value<preset value)

Signal characteristics: Coincidentally, the ON/OFF state of the output is controlled by the "output disable" signal (no output when disabled in>/<mode; reset ON state when disabled in mode)

(2) Key operations

Reset logic: When powered on, the module is reset, or switched to the comparison counter mode, the current value is reset to zero from the preset value

Notes:

When the preset value is set to the maximum value (such as 999999), the>mode does not meet the coincidence condition

When the preset value is set to 0, the<mode does not meet the coincidence condition

Coincidentally, the ON/OFF time of the signal needs to be longer than the CPU scanning time to avoid unrecognized states

(3) Ladder diagram configuration

Initial settings: Configure pulse input mode, counting multiplier, and coincidence output mode through output registers 4001-4004

Example parameters: Coincidence preset value=500, pulse input mode=phase A/B, counting multiplier=X1

2. Cyclic Counter

(1) Core functions

Basic ability: Automatically reset when the current count value reaches the preset value or counting width, repeat counting in a loop

Default configuration: After initial setting, the preset value and count width are automatically set to 100

Coincidentally output: When the target value is reached, an ON signal is output, which needs to be reset through the "output disable" signal

(2) Key operations

Count width: When set to 0, the counter stays at 0 and does not perform addition or subtraction counting

Time requirement: The preset value and counting width must meet the requirement of t>5ms (to avoid signal conflicts)