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Gem6K Hardware Installation Guide
CNTRL-P – Reference for Digital Inputs (optional)
Make connections to one or both of the CNTRL-P pins to change the digital inputs
or limit inputs from sourcing inputs to sinking inputs.
CNTRL-P (pin 27)
affects Limit Inputs
1 – 3
CNTRL-P (pin 33)
affects Digital Inputs 1 – 5
It is not necessary for you to make any connections to CNTRL-P. If you connect
nothing, then the inputs are internally pulled up to VINref. If sourcing inputs are
appropriate for your application, then make no connections to CNTRL-P.
If you connect a CNTRL-P pin to digital ground, then its associated inputs will
become sinking inputs, and will sink current.
Limit Inputs (optional)
The Gem6K drive has three limit inputs. All connections are shown in the next
drawing. Defaults are shown in parentheses, but you can use the LIMFNC
command to redefine the function of any of the limits. See the
Gemini GV6K/
GT6K Command Reference
for more information.
By default, these are +24VDC sourcing inputs. You can use VINref (pin 26) to
change the switching voltage level. You can also use CNTRL-P (pin 27) to change
the inputs from sourcing to sinking inputs.
Internal Connections
Same circuit design
as Limit 1
VINref
Limit 1 (Pos limit)
Limit 2 (Neg limit)
Input/Limit Ground
Limit 3 (Home)
Input/Limit Ground
DRIVE I/O Connector
+24V
CNTRL-P
(for limits 1 – 3)
26
28
29
30
31
32
27
6.81 K
Ω
20.0 K
Ω
18.2 K
Ω
12.0 K
Ω
33.0 K
Ω
33.0 K
Ω
-
+
Limits internally pulled up to
+24V, unless you connect an
external 5 – 24VDC supply to
the VINref terminal.
Limits are sourcing at +24V,
unless you connect CNTRL-P
to ground; then limits will be
sinking inputs.
Limit voltage range:
0 – 24VDC.
Switching Levels:
Low
≤
1/3 VINref voltage
High
≥
2/3 VINref voltage
10 K
Ω
10 K
Ω
Threshold
Sense
Pullup/Down
Sense
Limits
You can use the LIMLVL and INDEB commands to configure the limit inputs as
active high or active low, and to set the debounce time, respectively.
