Watlow Series SD31 PID with Optional Countdown Timer Instrukcja Użytkownika Strona 10
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Watlow Series SD31 ■ 8 ■ Chapter 2 Install and Wire
Figure 8a — 0 to 20 mA Process Input
(all model numbers)
• Input impedance 100 Ω, dc only
• Controller does not supply power for the current loop
Figure 8b — Output 1 Mechanical Relay
SD31 - _ J _ _ - _ _ _ _
• Form A contact
• 2 A, resistive
• 125 VA pilot duty, 120/240VÅ (ac), inductive
• See Quencharc note
• 240VÅ (ac) maximum
• 30VÎ (dc) maximum
• For use with ac or dc
• Minimum load current 10 mA
• Output does not supply power
Figure 8c — Output 1 Solid-state Relay
SD31 - _ K _ _ - _ _ _ _
• Form A contact
• 0.5 A maximum, resistive
• 20 VA pilot duty, 120/240VÅ (ac), inductive
• See Quencharc note
• 24 to 240VÅ (ac)
• Minimum load current 10 mA
• Maximum leakage current 100 µA
• Not for use with direct current (dc)
• Output does not supply power
Internal Circuitry
COM.
N.O.
Solid-state Relay
5
6
Solid-state Switch
4
56
normally open 6
common 5
Internal Circuitry
COM.
N.O.
Mechanical Relay
5
6
4
56
normally open 6
common 5
8
9 10
11
5
6
7
+
+
-
-
Transmitter
Power
Supply
Two Wire Transmitter Wiring
8
11
+
-
4
8
9 10
11
5
6
7
8
11
6
8 9
10 11
8
11
+
-
ç
WARNING: Process input may
not have sensor break protec-
tion. Outputs can remain full on.
ç
Warning:
Use National Electric (NEC) or
other country-specific standard
wiring and safety practices when
wiring and connecting this con-
troller to a power source and to
electrical sensors or peripheral
devices. Failure to do so may re-
sult in damage to equipment and
property, and/or injury or loss of
life.
Quencharc Note:
Switching pilot duty inductive
loads (relay coils, solenoids,
etc.) with the mechanical relay
or solid-state relay output op-
tions requires use of an R.C.
suppressor.
Watlow carries the R.C. sup-
pressor Quencharc brand name,
which is a trademark of ITW
Paktron. Watlow Part No. 0804-
0147-0000.
Spring clamp wiring connector
note:
To insert the wire, push the wire
into the desired connection num-
ber, and it should automatically
lock into place. To remove the
wire, press and hold the orange
release tab with a small screw-
driver. Pull the wire out of the
connection. Solid or tinned wire
recommended.
- User’s Manual 1
- Series SD31 1
- Single Display PID Controller 1
- Safety Information 2
- Technical Assistance 2
- Warranty 2
- Table of Contents 3
- Overview 4
- autotune 5
- Install and Wire 6
- Removing the SD31 Controller 7
- Wiring the Series SD31 8
- Figure 7b — RTD Input (100 9
- Figure 7c — 0 to 10V 9
- Figure 7d — 0 to 50mV 9
- 0 to 20 mA Process Input 10
- Output 1 Mechanical Relay 10
- Output 1 Solid-state Relay 10
- Output 1 Switched DC 11
- Output 1 Process 11
- Output 2 Mechanical Relay 11
- Output 2 Solid-state Relay 12
- Output 2 Switched DC 12
- Output 2 EIA/TIA-485 12
- 12VÎ (dc) 13
- Ethernet Gateway 14
- Home Page Overview 17
- ;ht] Rate Heat 18
- Setup Page Overview 19
- Factory Page Overview 20
- Programming Page Overview 20
- Read/Write 21
- Offset the input reading 31
- Programming Page Example 37
- Countdown Timer 38
- • SP is used when not timing 40
- Timer Example 44
- Calibrating the Series SD31 48
- Process Output Procedures 49
- Restoring Factory Calibration 49
- Features 50
- Operations Page 51
- Autotuning 51
- IS1 IS2 IS3 IS4 52
- 123 456 789 258 52
- Filter Time Constant 53
- Sensor Selection 53
- Access Lockout 53
- High Scale and Low Scale 53
- Control Methods 54
- On-Off Control 55
- Proportional Control 55
- (PID) Control 56
- Dead Band 56
- Nonlinear output curve 57
- Independent Heat and Cool PID 57
- Variable Time Base 57
- Process or Deviation Alarms 58
- Alarm Set Points 58
- Alarm Hysteresis 59
- Alarm Latching 59
- Alarm Silencing 59
- Retransmit 59
- Communications 60
- Troubleshooting 62
- Error Messages 64
- Appendix 65
- Power Supply H or L 67
- Output 1 C, K, F or J 67
- Output 2 A, C, K, J or U 67
- Timer Option A or T 67
- Prompt Index 70
- Series SD 71
- How to Reach Us 72
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