Owner's manual

Quantum Series 140 EHC 204 00sc 140 EHC 208 00sc
20
Wiring the Terminal Block
The module terminal block has eight shield terminals provided as frame ground connections for input wire
shielding. It also provides eight external encoder disable pins used to externally gate each input. A low input
allows each channel (or channel pair) to operate. There are also 8 counter enable lines that are compatible with 5,
12, and 24 VDC inputs. If pulled high with one of these inputs, a channel (or channel pair) is disabled.
Pin 1 Channel 1 Hi
Pin 3 Channel 1 Lo
Pin 5 Channel 1 Shield
Pin 7 Channel 1 Enable
Pin 9 Channel 1 Gate
Pin 11 Channel 3 Hi
Pin 15 Channel 3 Shield
Pin 17 Channel 3 Enable
Pin 13 Channel 3 Lo
Pin 19 Channel 3 Gate
Pin 21 Channel 5 Hi
Pin 25 Channel 5 Shield
Pin 27 Channel 5 Enable
Pin 23 Channel 5 Lo
Pin 29 Channel 5 Gate
Pin 31 Channel 7 Hi
Pin 35 Channel 7 Shield
Pin 37 Channel 7 Enable
Pin 33 Channel 7 Lo
Pin 39 Channel 7 Gate
Channel 2 Hi Pin 2
Channel 2 Lo Pin 4
Channel 2 Shield Pin 6
Channel 2 Enable Pin 8
Channel 2 Gate Pin 10
Channel 4 Hi Pin 12
Channel 4 Lo Pin 14
Channel 4 Shield Pin 16
Channel 4 Enable Pin 18
Channel 4 Gate Pin 20
Channel 6 Hi Pin 22
Channel 6 Lo Pin 24
Channel 6 Shield Pin 26
Channel 6 Enable Pin 28
Channel 6 Gate Pin 30
Channel 8 Hi Pin 32
Channel 8 Lo Pin 34
Channel 8 Shield Pin 36
Channel 8 Enable Pin 38
Channel 8 Gate Pin 40
24VDC
+
-
T
y
pical
Meter Input
A input
B input
Common
T
y
pical Quadrature
Encoder Input
Off On Off
1- On
0 - Off
Each terminal accepts up to two wires, with the restrictions noted in the following table (for shielded, twisted-pair
cable).