Watson-Marlow 114D Custom OEM Peristaltic Pump

OEM Custom Peristaltic Pump Independently Developed by Moyan Electromechanical: This peristaltic pump is equipped with a WATSON-MARLOW 114D peristaltic pump head and a stepper motor. Speed range: Intermittent operation: 0–600 rpm; Continuous operation: 0–400 rpm Flow range: Continuous flow: 0–340 ml/min; Intermittent flow: 0–510 ml/min

Number of Channels 1
Flow Rate Range 340ml/min
Speed Range 600rpm

Detailed Introduction
Product Parameters
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尺寸图1

Dimension Drawing

泵头打开尺寸

Pump Head Open Dimensions

图3 114D泵头流量曲线图

Figure 3 114D Pump Head Flow Rate Curve

管孔内径(mm)		0.5	0.8	1.6	2.4	3.2	4.0	4.8
ml/rev		0.02	0.04	0.14	0.29	0.47	0.67	0.85
Flow Rate (ml/ min)	30rpm	0.7	1.3	4.2	8.7	14	20	25.5
	60rpm	1.4	2.6	8.4	17.5	28.5	40.5	51
	100rpm	2.2	4.3	14	29	47.5	67	85
	190rpm	4.3	8.2	26.5	55	90.5	128	160
	200rpm	4.6	8.6	28	58	95	135	170
	350rpm	8	15	49	100	165	235	300
	400rpm	9.1	17	56	115	190	270	340
	600rpm	13.5	26	84	175	285	405	510

Pump Head Flow Rate Data Table

电机与驱动器的连线图

Motor and Driver Wiring Diagram

20240814111213390

Driver Interface Terminal Definition

Interface	Description
A+、A-、B+、B-	Motor interface
VCC	Positive power supply (12~36V)
GND	Power ground
485_A、485_B	RS485 interface
485_A、485_B	RS485 interface (for device cascading)
A1	4~20mA current analog control input interface
A2	Input voltage acquisition port, or for external potentiometer (<3.3V) with AV & SGND
AV	3.3V output interface; for power supply when using external potentiometer with AV & SGND
SGND	Analog input GND port
S3	Sensor 3 (3.3~5V compatible), connected to quadrature encoder A for closed-loop model
S4	Sensor 4 (3.3~5V compatible), connected to quadrature encoder B for closed-loop model
S5	Sensor 5 (3.3~5V compatible), connected to encoder Z for closed-loop model
S6	Sensor 6 (3.3~5V compatible)
5V	5V output (<100mA)
SGND	Signal ground

The RS485 interface supports cascading up to 32 slave devices.Pins S3, S4, S5, and S6 can be configured as inputs or outputs (I/O).The 5V output port can supply 5V power to external devices.

For the integrated closed‑loop model, pins S3 and S4 are factory‑assigned for connecting encoder A and B signals, and pin S5 is used for the encoder Z signal (if the Z signal is applied).

The 4–20 mA analog signal adjusts the speed within the range of 0–60 rpm.

The purple S6 wire and black SGND wire control motor start and stop.
The brown S5 wire and black SGND wire control motor rotation direction.
The analog input wire is the green A1 wire.
The analog power is supplied by the red 5V wire.

Note: The yellow‑green SGND wire for the analog signal must be short‑circuited with the black SGND wire for the power supply.

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