Emerson GW-810-3760, Инструкция по установке и эксплуатации

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Optional Current Loop Interfaces Connecting Communication Devices • 29
Loop 2 = PPM (Default: 0.016 mA DC = 1 PPM)
4.7.2. 4-20 mA DC Connections
External devices are connected to the RLDS using a
shielded dual twisted pair cable. Use any of the
remaining service knockouts to gain access to the
interior of the monitor. Locate the dual 4–20 mA DC
output connector (see below) and remove it from the
circuit board. Secure the wire leads to the connector
orienting them as shown in the diagram below. Check
to make sure the polarity matches the wiring at the
external device. When you are through securing the
connections, carefully plug the connector back onto
the circuit board.
10 mA DC 6
11 mA DC 7
12 mA DC 8
13 mA DC 9
14 mA DC 10
15 mA DC 11
16 mA DC 12
17 mA DC 13
18 mA DC 14
19 mA DC 15
20 mA DC 16
Output PPM Defult
4 mA DC 0 PPM
5 mA DC 63 PPM
6 mA DC 125 PPM
7 mA DC 188 PPM
8 mA DC 250 PPM
9 mA DC 313 PPM
10 mA DC 375 PPM
11 mA DC 438 PPM
12 mA DC 500 PPM
13 mA DC 563 PPM
14 mA DC 625 PPM
15 mA DC 688 PPM
16 mA DC 750 PPM
17 mA DC 813 PPM
18 mA DC 875 PPM
19 mA DC 973 PPM
20 mA DC 1000 PPM
Table 4-4 - Loop 2 (PPM)
Output Zone
Table 4-3 - Loop 1 (Zone Area)
NOTE: The ground connections of the 4-20
mA DC output connector are common.
NOTE: The 4-20 mA DC output connector are
SIGNAL OUT ONLY. DO NOT APPLY
POWER.
NOTE: It is highly recommended that a
current loop isolator is used when connecting
to the 4-20 outputs.
NOTE: When one or both current loop outputs
are not used, install a jumper wire between the
ground and the unused loop terminal(s) to
prevent the system from generating a current
loop fault.
Figure 4-21 - Optional Dual 4-20 DC Output Board for Multi-
Zone
CAUTION: The loop outputs have isolated
grounds. Therefore the cable shield should be
terminated at the receiver and not the RLDS
monitor. The signal for both current loops
must be returned to the RLDS monitor.