Copley Controls Accelnet Plus AEV-090-14 User Manual page 105

Accelnet Plus Micro Modules User Guide
Example Wiring Diagram (SIL 3 and Cat. 3 PL e STO Implementation)
e set
E Stop
`
Emergency Stop: Stopping Category 1
The graphic above shows a wiring example for implementing a SIL 3, Cat. 3 PL e emergency
stop function using an AEV & APV drive. The example shows a safety relay with two sets of
output contacts – one set (K1, K2) reacts immediately to changes on the safety relay inputs
and the other (K3, K4) reacts after a user-programmable delay. A double pole, single throw
E-stop switch is used to drive two independent inputs to the safety relay.
A momentary switch is wired to the safety relay reset input and is used to reset the relay at
start-up and after an E-stop event. The enable input on the drive is wired to one of the
immediate response contacts.
The drive is programmed such that when this input is de-energized, the drive decelerates the
motor speed in a controlled fashion. After the user-programmed delay time, contacts K3 and
K4 open and de-energize the STO inputs to the drive. The drive STO function responds
accordingly and the safe state is entered within the specified drive STO response time. This
type of implementation brings the motor speed to near zero before the STO function is
activated. It is important to note that the safe state is not entered immediately upon actuation
of the E-stop button. The safe state is entered only after the STO inputs have become de-
energized and the specified STO response time has elapsed.
This table shows the components needed on the User Board as shown above:
Part
Diode, zener, 6.2V, 200mW
Diode, zener, 5.1V, 500mW
Resistor, 6.19 k, 0.4 W, 1%
Resistor, 2.2 k, 2 W, 1%
Important:
The locations of the Zener diodes for the IN1 channel are different than the locations
of the diodes for the STO-IN1 and STO-IN2 channels.
Copley Controls
A1 A2
2
S3 PNOZ s5
S3
1
S12
S12
2
INST
S22
1
13
23
S21
S11
3
D D
3
37
Safet
7
elay
P
Supply
2
0
PartNum Qty
DDZ6V2BS-7 3
DDZ5V1BSF-7 3
ESR10EZPF6191 6
RHC2512FT2K20 3
16-01687 Rev 03
v
2 AEV APV
10k
6.2V
IN1 ENA E
2.2k
5.1V
INCOM
3 AEV APV
5.1V
STO IN1 2k
2.2k
6.2V
STO IN1
5.1V
STO IN2 2k
2.2k
6.2V
STO IN2
unctional Safety Circuit oundary
SGND
Mfgr
Diodes Inc
Diodes Inc
Rohm Semiconductor
Stackpole Electronics
5V
5V
1k
100 pf
Channel 1
2k
Channel 2
2k
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