AW Gear Meters RT-15 - Manual (Page 12)

RT‐15 Flow Monitor
Operation and Programming Manual
11
1 0 0 O h m
(Em it te r)
(C o lle c to r)
5 0 m A M a x.
LIM IT O UTPUTS
(Iso la te d )
LIM IT (+ )
LIM IT (- )
5 - 3 0 VD C
The RT‐15 is internally isolated from the DC supply by a DC/DC converter. A power‐on LED is provided on
the connection board and a two Amp mini‐fuse protects the circuitry in case of a supply fault. (See
drawing below.)
Figure 3: Wiring Connections
Reset Input
An opto‐isolated input is used to reset the TOTAL A (Job Total). See TOTAL A RESET on page 21 for
information regarding resetting the job totalizer.
Limits/Pulse Outputs
Two opto‐isolated NPN open‐collector outputs can sink or source depending on connection (i.e., power
can flow in or out).
Connection polarity: collector (+), emitter (‐). See adjacent
diagram.
Output ratings are listed on page 9. You can assign either
output to a rate limit, total limit for batching, or as a totalizer
pulsed output. See LIMITS Display Mode on page 25 and LIMITS
RE
S
E
T
+
RE
S
E
T
-
LIM
IT
1
+
LIM
IT
1
-
LIM
IT
2
+
LIM
IT
2
-
L
OOP
-
LO
O
P
+
+V
c
c
E
A
R
T
H G
R
OU
ND
SUP
P
LY
N
E
GA
T
IV
E
1
5
-24
V
/DC
SUP
P
L
Y
W IRIN G TERM IN A LS
(UN D ER REA R C O VER)
2 A M IN I- FUSE
JUL 2005 aw
Z00257 ver 1.2
F2
LE2
LE
1
PO W ER
L ED
m A O UT
LED
C USTO M ER C O N N EC TIO N S
(LEFT TO RIGHT)
1 5 - 2 4 /D C SUPPLY + Vd c Su p p ly
SUPPL Y N EGA TIVE - Vd c Su p p ly
EA RTH GRO UN D (N o t Us e d , u s e En c l. Gn d Te rm .)
RESET + O p t ic a lly is o la t e d in p u t (+ )
RESET - O p t ic a lly is o la t e d in p u t (- )
L IM IT1 + O p t ic a lly is o la t e d o u t p u t (+ )
L IM IT1 - O p t ic a lly is o la t e d o u t p u t (- )
L IM IT2 + O p t ic a lly is o la t e d o u t p u t (+ )
L IM IT2 - O p t ic a lly is o la t e d o u t p u t (- )
+ Vc c Su p p ly O u t p u t (sa m e a s D C Su p p ly)
L O O P + Is o la t e d m A Lo o p (+ )
L O O P - Is o la t e d m A Lo o p (- )
EN C LO SURE
GRO UN D
TERM IN A L
3 .3 Ko h m RESET +
5 - 3 0 VD C
RESET IN PUT
(Is o la t e d )
RESET -
+ M o m e n t a ry
Notice