8.3 Interfaces on ESPU

There are interfaces of spindle, hand wheel, linear encoder and digital input/output on ESPU. It could control direction and velocity of spindle, even do rigid tapping or positioning if the driver is allowed to. It also receives the signals from an external handwheel, linear encoder and provides 8 digital inputs/outputs. The EtherCAT interface is used to connect to the host.

PWR: Power terminal block

PWR provides the connection to DC 24V. Please use the same power source of M83. Please make sure the voltage polarity is correct before turning this on.

Pin	Explain
24V	Positive electrode of DC 24V
24G	Negative electrode of DC 24V

PWR Placement Drawing

F.G.: Ground terminal

Connect ground terminal to the grounding copper plate in the distribution box via the grounding wire to protect ESPU.

F.G. Placement Drawing

X1~X8: Digital input terminal block

Digital input terminal block has 8 digital inputs, 1 input common point (COM) and DC 24V input E24V and E24G for external IO on SP and MPG.

8 input points can connect to whether the 24V or 0V, PNP or NPN connection. Each input has a LED indicator to tell the status of this input.

Please be aware: Only use NPN or PNP connection in one time. The voltage source of input common point (COM) should not be the same as the PWR, or it would lose the function of isolated design.

Pin	Definition	Explain	Corresponding LED indicator
X1	Digital input point 1	Spindle CW signal in manual mode	X-1
X2	Digital input point 2	Spindle CCW signal in manual mode	X-2
X3	Digital input point 3	Status input of spindle high/low gear. Contact when in high gear.	X-3
X4	Digital input point 4	External handshake M code input point	X-4
X5	Reserved	Reserved input point	X-5
X6	Reserved	Reserved input point	X-6
X7	Reserved	Reserved input point	X-7
X8	Reserved	Reserved input point	X-8
COM	Common point of digital inputs	NPN connection: External 24V PNP Connection: External 0V	NA
E24V	External 24V	It is connected to VI of SP and MPG, use to provide SP, MPG external 24V	NA
E24G	External 24V voltage reference point	It is connected to VG of SP and MPG, use to provide SP, MPG external 0V	NA

X1 and X2 Drawing

X1~X8 Placement Drawing

Y1~Y8: Digital output terminal block

Y1~Y8 are 8 relay outputs with A, B, COM contacts. Output contacts are only allowed to connect with magnetic contactor or coil of pneumatic valve, when the rated output voltage is AC220V, an spark killer must be put on to avoid noise and interference. Each output point has a corresponding LED indicator to tell the status.

Output terminal	Definition	Explain	Corresponding LED indicator
Y1	Digital output point 1	Lamp output point (NO point)	Y-1
Y2	Digital output point 2	coolant output point (NO point)	Y-2
Y3	Digital output point 3	air blower output point (NO point)	Y-3
Y4	Digital output point 4	External handshake M code output point (NO point)	Y-4
Y5	Digital output point 5	Z axis brake	Y-5
Y6	Digital output point 6	Green light-running	Y-6
Y7	Digital output point 7	Yellow light-standby	Y-7
Y8	Digital output point 8	Red light-alarm	Y-8

Y1~Y8 Placement Drawing

IN, OUT: EtherCAT Communication Connector

IN：EtherCAT cable IN

Connect upstream to the previous EtherCAT device.

OUT：EtherCAT cable OUT

Connect downstream to the next EtherCAT device.

IN and OUT Placement Drawing

SP: Spindle connector

The spindle connector is connected to the spindle driver with a 26 PIN 3M-SCSI connector. This interface includes directions/velocity command, encoder feedback and some assisting I/Os.

Pin	Definition	Explain	Corresponding LED indicator
1	Velocity command	±10V analog output	NA
2	Velocity command reference point	±10V analog output reference point	NA
3	Spindle CW	Photocoupler output point +, common conduction to output signal	NA
4	Spindle CCW	Photocoupler output point +, common conduction to output signal	NA
5	Rigid tapping	Photocoupler output point +, common conduction to output signal	NA
6	Spindle positioning	Photocoupler output point +, common conduction to output signal	NA
7	Common point of output signals	Photocoupler output point -	NA
8	Spindle override analog input	Adjust spindle override in manual mode	NA
9	analog input reference point	Analog input reference point	NA
10	Spindle alarm	Input point, PNP or NPN input	NA
11	Spindle zero speed	Input point, PNP or NPN input	NA
12	Spindle speed arrival	Input point, PNP or NPN input	NA
13	Spindle positioning finish	Input point, PNP or NPN input	NA
14	Common point of input signals	Input point NPN connection: External 24V connection Input point PNP Connection: External 0V connection	NA
15	A+	Spindle encoder A+ signal input	NA
16	A-	Spindle encoder A- signal input	NA
17	B+	Spindle encoder B+ signal input	NA
18	B-	Spindle encoder B- signal input	NA
19	Z+	Spindle encoder Z+ signal input	NA
20	Z-	Spindle encoder Z- signal input	NA
21	5V	Power supply for spindle encoder (Power: 1W per axis)	NA
22	5G	5V Power reference point	NA
23	VI	External 24V, provided by E24V pin of Digital input terminal block	NA
24	VG	External 24V power reference point, connect with E24G pin of Digital input terminal block	NA
25	NC	Empty	NA
26	NC	Empty	NA

pin8, pin9, pin21, pin22 Drawing

SP Placement Drawing

MPG: Handwheel connector

The connector is connected to hand wheel with a 14 PIN 3M-SCSI connector. This interface includes axial selection, multiply rate selection and handwheel counter feedback.

Pin	Definition	Explain	Corresponding LED indicator
1	X axis selection	Input point, PNP or NPN input	NA
2	Y axis selection	Input point, PNP or NPN input	NA
3	Z axis selection	Input point, PNP or NPN input	NA
4	Multiply rate selection X10	Input point, PNP or NPN input	NA
5	Multiply rate selection X100	Input point, PNP or NPN input	NA
6	Common of handwheel signals	Connect to the COM on handwheel	NA
7	A+	Hand wheel A+ signal input	NA
8	A-	Hand wheel A- signal input	NA
9	B+	Hand wheel B+ signal input	NA
10	B-	Hand wheel B- signal input	NA
11	Handwheel indicator +	Connect to the indicator + on handwheel	NA
12	Handwheel indicator -	Connect to the indicator - on handwheel	NA
13	5V	Hand wheel power (Power: 1W)	NA
14	5G	5V Power reference point	NA

MPG Placement Drawing

SCALE：Linear encoder connector

The SCALE connector is connected to the linear encoder with a 15 PIN D-SUB connector.

Pin	Definition	Explain	Corresponding LED indicator
1	A+	Linear encoder A+ signal input	NA
2	A-	Linear encoder A- signal input	NA
3	B+	Linear encoder B+ signal input	NA
4	B-	Linear encoder B- signal input	NA
5	Z+	Linear encoder Z+ signal input	NA
6	Z-	Linear encoder Z- signal input	NA
7	NC	Empty	NA
8	NC	Empty	NA
9	5V	Power supply for linear encoder (Power: 1W per axis)	NA
10	NC	Empty	NA
11	5G	5V Power reference point	NA
12	NC	Empty	NA
13	NC	Empty	NA
14	NC	Empty	NA
15	F.G.	Connect with linear encoder F.G signal	NA

SCALE Placement Drawing