3-2
L/S Precision Variable-Speed Drives Operating Manual
Masterflex
Section 3
Operation
External Operation
Bench top models are equipped with inputs that can be controlled by
external signals connected at the rear panel 18-pin round connector. The
external inputs permit control of the pump by remote equipment or
accessories. Figure 3-1 indicates the signal locations in the connector.
Figure 3-1.
18-Pin Connector Configuration with Wiring Scheme
Description
Pin No.
Speed Control Voltage Input (0–10V) (+) input
1 (black)
Speed Control Current Input (4–20 mA) (+) input
3 (white)
Speed Control Input Reference Common
5 (orange)
Local/Remote Speed Control
14 (red/yellow)
Local/Remote Speed Control Reference
10 (grey)
Start/Stop and CW/CCW Reference
8 (yellow)
Start/Stop (+) Control
4 (green)
CW/CCW
6 (blue)
Chassis (Earth) Ground
9 (violet)
NOTE:
Colors are those of the Remote Cable, Cat. number MN-77300-32.
12
34
5
6
78
9
10
12
13
14
15
16
17 18
11
Keypad Lockout
Enable/Disable
Press and hold the INT/EXT key. After five (5) seconds, display will
change to all dashes. Release INT/EXT key and press UP ARROW key (
▲
)
five (5) times. Repeat this process to unlock the keypad. When the keypad
is locked out, display will change to display all dashes (- - - - -) when a key
is depressed.
Note:
Jumpers “A” and “B” are optional. See
page 3-3 External Inputs
for
correct usage.
