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EP20-XXXXX-XXX-XXX (en)
6.6. Control Wiring (Recommended)
6.6.1. Safe Stop wiring diagram
It is recommended to install an external Emergency Stop (Safe Stop). Referred to in VFD manual as Safe Torque Off (STO).
The VFD will come with pin 37 (E-stop digital input) wired to 24V (pin 12 or 13). This jumper will need to be removed when
the E-stop is installed.
The E-Stop should be mechanically latching and normally closed. The pump will only run when 24V is supplied to pin 37.
An open circuit will stop the pump.
Pin 12 on VFD
(+24 V OUT)
Pin 37 on VFD
(Digital Input)
6.7. Control Wiring (Optional)
6.7.1. Digital start/ stop control
If the VFD is run using analog or digital control methods in the "Auto On" mode, then a Start / Stop command will be re-
quired to run.
To configure the VFD for a digital Start/Stop command, install a switch between pin 20 (common) and digital input 27 or
29.
Update VFD parameter 512 or 513 respectively to "[8] Start".
Additionally, a digital reset command can be used with the same procedure on a different digital input with the VFD pa-
rameter set to "[1] Reset" instead.
NOTE
: Terminal pins 27 and 29 are available to be configured for any digital input or output. By default these are both config-
ured to "Input" per VFD parameters 501 and 502. Note that all digital inputs are configured for NPN.
+24 V
+24 V
D IN
D IN
D IN
COM
D IN
D IN
D IN
D IN
12
13
18
19
20
27
29
32
33
37
Drive
VFD Parameter
Function
Setting
512
Terminal 27 digital input
[8] Start
513
Terminal 29 digital input
[1] Reset
Содержание ARO EVO EP20 Series
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